ฝึกพูดภาษาอังกฤษด้วยเทคนิค Shadowing จากวิดีโอ: How He Makes Millions Sourcing Products From China

เลือกโหมดฝึก

แต่ละโหมดจะเปิดห้องฝึกแบบเต็มจอ

314 ประโยค

หากประโยคสั้นหรือยาวเกินไป กดที่ Edit เพื่อปรับแก้

Meet Isaac, commonly known as the sourcing guy on social media, where his videos have racked up millions of views.

Isaac has become the go-to expert for e-commerce entrepreneurs, looking to source products, and he manages his entire operation from Bali.

His journey started with selling portable fans to sorority girls at parties.

Now he's sourcing products for some of the world's largest e-commerce brands.

By senior year, we were already doing a few million dollars in sales.

In this video, Isaac shares how much he earns from his business, how beginners can start a sourcing venture

and offers valuable tips on finding the best products for your e-commerce store

when did you move to bali uh it's been two

and a half years now yeah where'd you move from from miami

that is a big change right it's a big change

and a lot of people ask me they're like what you're from miami like why would you ever leave miami

and i do love miami like i'm back like three four months out of the year

but you don't get this in miami did you just visit bali for a holiday

and just like this is it pretty much i mean i kind of knew i wanted to go and live in Asia.

And I was on a big sourcing trip.

So I was visiting factories in Cambodia, Sri Lanka and Thailand.

And I was kind of burnt out after that.

And I went and heard Bali was this amazing place to go and work from.

So I came out here to come try it out.

And immediately after like three days was like, okay, I can actually see myself living here.

So what were you doing before sourcing?

I've always been sourcing.

So my dad, when he was my age, moved to China and opened up an electronics factory.

And then before that, my grandfather, my mom said we had a small apparel factory in Canada where I was originally like born

and grew up and then would always go

and work for the factories from like being like a toddler helping out with the fabrics doing swatch cards

and then when I was older going to China with my dad helping manage the factory there

and then decided rather start an agency to help other people source products

and become like a sourcing agent and so I started my agency eight years ago now.

I started the business freshman year of college by accident I

brought these little cell phones I would always like order gadgets on AliExpress I thought they were fun.

I brought this little cell phone fan

that plugs into your phone to a party just because it was genuinely hot in Gainesville, Florida, University of Florida.

And I go and I start using it at the party and all these girls are coming up to me like, oh my God, where do you get that?

That's so cool.

I need that for Sorority Rush.

And I kept on giving them something with the Alibaba link or that Aliexpress link.

And then by the fifth person, they were like, where do you get that?

And I was like, I'm, I was kind of drunk.

I was like, I'm Isaac the fan guy.

I sell fans.

They're $5.

Would you like one?

And they're like, yeah.

I'm like, well, I'm sold out right now.

I'm just completely like off rip.

Then I ordered 100, sold out in a week.

And it wasn't there.

Was it there?

No, it was.

So you were just slinging fans?

This is like freshman year of college, you're just slinging fans.

But then very quickly, about 100, about 1,000, had people sign them all around campuses, had some news articles about us.

Then my hometown reached out and they're like, hey, can we buy 2,000 fans with our logo on them?

I'm like, yeah, sure.

You know, there'll be 20% off.

But we made like $6,000 just off that little bulk order.

And I was like, wait, this is a way better business than selling to drunk shorty girls.

Like I should be selling these to businesses.

This is the fun part about Bali.

You can come in.

So Gi makes my clothes.

Oh, really?

Yeah.

Okay.

So one of the benefits about Bali is

that we have lots of access to fabric markets and we have like awesome tailors.

This is the issue with like manufacturing in Bali.

It's an Island.

So you're not going to have all these big fabric mills to be able to go and get the fabrics.

A lot of them are going to come from China either way you're gonna have, from like a labor cost perspective, it's going to be naturally higher than almost anywhere else in Indonesia,

because it is like a touristy kind of zone.

And you have lots of holidays.

So like all these different elements make it a very slow, expensive place that makes it hard to scale.

But the thing is, great brands have started here.

Because they have people like Guy to be able to go

and they test out fabrics and they're able to do small runs and get going.

But I'm helping like eight of my friends right now with brands in Bali move their manufacturing outside, mostly to China, because it's just too hard to scale.

This is David.

He does all my video work.

Yeah.

So your socials have been growing hates fast as hell.

Hey, is that how you get all your clients?

Yeah, exactly.

For the most part, we have some other like sales reps and stuff like that.

Yeah.

But, you know, obviously, you know, the best is inbound.

So we're making a series about popular products and then how much they actually cost.

We're having a hard time in the beginning going to socials because it was very education focused.

If I don't make the videos that are interesting to everyone, I'm never going to get the eyeballs and never be able to actually grow my personal brand.

So it took us a while, trial and error, to find the types of content that was going to work.

And then once we found the series that worked, we just kept on repeating and now we're doing a lot more travel stuff, going over to Vietnam, going over to China, doing more YouTube, long form.

Last month we grew like 120,000 followers, fully organic.

That's crazy.

Yeah.

And how many clients would you get from that?

300 inquiries a month probably for sourcing and we'll take on like one to two.

And what's that life, the lifetime value of the clients?

Oh, I mean a lot of them are going to be six figures.

100

Yeah. So crazy.

101

Zooming in hundreds of thousands just off social media.

102

Yeah, it's great.

103

That's awesome.

104

These are our sugar gliders.

105

No way.

106

They don't look real.

107

They're so cute.

108

They're super cute.

109

So if you were starting out, how would you get your first sourcing clients?

110

So I found like we started out doing corporate sourcing.

111

So we were doing like custom t-shirts, custom water balls, hats, because you know, most businesses are going to need some level of like swag and giveaways.

112

And that's a pretty low, you know, low hanging fruit hanging fruit, it's lower volume, it's gonna get you kind of comfortable going and sourcing products and delivering the customers.

113

And you kind of just grow from there.

114

You start working with bigger and bigger businesses, you work on like getting all those deliverables in place.

115

And then the bigger jump is in working with actual e-commerce brands.

116

Yeah.

117

It took us a few years of like getting really comfortable with working with factories overseas, with overall production process, making sure everything was perfect.

118

And then we can start taking on, you know, seven plus figure e-commerce brands.

119

So you basically have to find factories, vet them, make sure they're good, and then put the clients in.

120

Is that basically what you do?

121

That's what we like to do.

122

So our whole thing is that we've been curating the best factories around the world

123

because it's pretty easy for brands to go and find mediocre products.

124

You can go on Alibaba, you can filter, you can find a decent product.

125

But if you want to find the best T-shirts in the world, the best hats, the best of whatever the product is, that's the hard part.

126

But then once you go and do all that work to find the best of the best, then you can bring on a client and then easily go and plug and play.

127

How do you charge that to a customer?

128

Because obviously they can eventually find those factories.

129

It just takes trial and error.

130

You're just saving them time, right?

131

And helping them manage that relationship.

132

Exactly.

133

We're saving them time and reducing their risk.

134

Yeah.

135

Because obviously it's not just the cost of the product, but it's also the risk that you might take by doing it wrong.

136

So if you do a production run for $100,000 and the production is wrong, then you have to, you know, not only do you lose all the time yeah

137

and the market opportunity of selling the product especially

138

if your brand's growing really quickly

139

but now you're going to lose the actual product that's was supposed to be blue

140

and came out green

141

so could a beginner just gone to alibaba find a couple of factories organize the samples

142

and stuff like that

143

or do you need to actually go to china you build the relationships again i think

144

that a beginner can go and make mediocre products yeah but

145

if you want to make the best product in the world that's where the kind of experience

146

and then the whole kind of blueprint that we built like that's where you have to go and follow to really execute.

147

It's funny, like you and Daniel, like you guys are exploding on social media.

148

It's almost like sourcing is becoming sexy.

149

Like it's almost like cool now.

150

Finally, right?

151

Why is this the most boring thing happening?

152

It was my like least favorite part of like managing the e-commerce.

153

Why do you think it's getting so big?

154

I think people are interested in like where products are coming from.

155

Right.

156

They love behind the scenes, especially with TikTok

157

and social media want to see like the get ready with

158

me the behind the scenes of the olympian you know at the olympic village eating their muffins

159

and all that kind of stuff social media inflection point i think

160

so yeah and then it's kind of a perfect uh cross point

161

because everyone wants to start a business everyone wants to have a brand yeah right

162

and they don't know how to do it

163

and then you also have the behind the scenes of how these bigger brands are manufacturing

164

and where they're getting their products from it makes it feel

165

very tangible yeah you know i can do this too relatable relatable right?

166

It's just like they see us selling your product for $80 and they're like, how they even make you as possible seeing it be made for $10 and just like, wow, I'm actually going to be able to do this.

167

Exactly.

168

What do you mean tips of dealing with like China and the suppliers there?

169

You want to keep them on their toes as much as possible.

170

So a lot of people will go and they think like, oh, I have my factory in China.

171

I'm good with them.

172

I don't really need a backup.

173

And I'm scared to let my factory or my agent know

174

that I'm looking at other factories because it's going to hurt the relationship.

175

My opinion is only going to strengthen the relationship because if they know that they can take advantage, then they probably will.

176

So them knowing that you have contingencies, you have other factories you're negotiating with, you're showing them the price and you're getting from other factories.

177

They know that if they don't act as an A-level supplier, someone else, it's a very competitive game, someone else is gonna take the business.

178

So I would say always have that backup.

179

And then from a production standpoint, you really, really have to, that's why we built an 80 step process to go and source products.

180

And the team has to go through and check off 80 boxes

181

because there's so many little ways where you can mess up.

182

But if you follow the steps, you will not mess up.

183

One of the biggest things is clear communication.

184

So can you build a specification sheet?

185

Can you build a tech pack?

186

Can you build exactly how the product's gonna look, exactly how you're gonna imprint it?

187

Something I like to talk about is centering.

188

Just because you tell the factory this is centered, doesn't mean they're gonna center it properly.

189

They're not really gonna, is it centered this way?

190

Is it centered this way?

191

It's better to go, I want four inches here, four inches here, two inches here, two inches here, than say centered.

192

So again, as specific as you can go, don't let them make any decisions for you make them all

193

yourself that's what the tech back is right tell me about

194

the progression of the agencies like first year what did you

195

make second year what did you make what was like the major turning point yeah i mean

196

so we started off in college doing like you know a few hundred k just going

197

and selling some merchandise by time you know graduating college

198

but by senior year we were already you know doing a few million dollars in sales

199

so it was a big growth a lot of that came from starting to work with more e-commerce clients.

200

So what happened is we started in corporate and the corporate business was great.

201

It was really fun, but we were doing everything direct to factory, a different model of how we were sourcing the merchandise.

202

Because all my friends, you get it, like when you're a young entrepreneur and you have a cool business, who are the other ones in their twenties?

203

It's normally the e-comm guys.

204

So a lot of my friends are these e-comm guys and then COVID hits, all their supply chains break, right?

205

But their sales are growing because ads are performing

206

so they're like they call me and they're like Isaac can you go

207

and can you help me here so i'm like yeah sure

208

and then we went

209

and started taking on these like huge projects taking over companies entire supply chains

210

and it really was like a test

211

because it was the hardest time to ever source and ship product

212

but we were able to do it successfully

213

so covert it also accelerated demand but

214

because of the complexity it got your heat to clients they realize how fragile their supply chain was exactly

215

and i think that it's still at this point where brands now know

216

that they need to have contingencies and we're coming in

217

and we're building out those contingencies for them yeah

218

so what year was that that was your third year of the agency

219

that was my yeah my third year of the agency third

220

or fourth year i like my agency what we're trying to

221

do is we're trying to again offer more solutions for smaller brands

222

because i mean you get it like the impact

223

that we can make is going to be very much tied

224

to like the overall skill yeah also a lot of what we do is move stuff out of China.

225

Cambodia, Sri Lanka, Vietnam, Thailand, we're going to a little bit of northern Africa.

226

So Egypt has been great.

227

We're doing some stuff in Pakistan.

228

It's really like an observation of you have to look at where the raw material is coming from.

229

So look at the labor cost.

230

You have to look at overall taxes and you know where that kind of country is progressing.

231

So you can kind of run a little bit of analysis

232

and look at the volumes and say okay like if you go and you move over to Egypt, your lead time is going to increase by 30%,

233

but your cost base is going to decrease by 30.

234

So what's worth it?

235

I think it's the cost basis.

236

What's the kind of good first year in terms of income creating like a sourcing agency?

237

I think you could offer first year, you can make like probably 60 grand pretty easily.

238

If you go to any like decent sized business, they're probably going and they're probably spending $100,000, $200,000 on like t-shirts and mugs and those kinds of products.

239

If you're able to run a 50% margin, all you really need to do is get $120,000 in sales, get majority of one business's book of business,

240

and you can make like you know a decent salary how do you get

241

that first client like obviously it's corporate as you said do you just dm them

242

or do you like source their product cheaper like

243

so well i think that sourcing going with price isn't how i love to sell

244

but i think when you're getting started it's the best way to sell

245

so the whole thing with the corporate merchandise industry is that majority of people don't go factory direct.

246

They're going through this domestic supplier network.

247

So these big suppliers in the industry that go and they're going to stock millions of t-shirts, millions of water bottles, millions of hats.

248

And then the domestic industry, you just go and you submit a purchase order to a warehouse in the US, they decorate the product and they deliver it to your client for you.

249

But if you go direct the factory, you can easily get like 30% less.

250

So all you need to do is go to any business.

251

I'd recommend going in your local area.

252

So you can go door knocking, you go up to them and say like, Hey, you know, we're different, we source merchandise for a brand, but we're different because we're going back to direct.

253

So we typically can get pricing for way cheaper.

254

Can you just go and tell me the products that you're going and making right now?

255

And let me price it out for you.

256

Right.

257

And then they're going to go and they're going to say, yeah, for the hats, you're paying $12 and then you're going to go on Alibaba

258

and you're going to go and you're going to find a hat for $3.

259

and then you can go and sell to them for seven.

260

Would you go get a sample from that factory?

261

Like, let's say we've got the hoodie on a hat.

262

Yeah.

263

Do you need the actual sample from the company first to then send to the supplier to get the actual final sample?

264

Or are you just like, these are my actual prices and you can just do it without touching it?

265

So I always recommend trying to get samples from factories

266

if you've never worked with them before because you don't want to go

267

and pitch a product that's going to be low quality.

268

You want to send reference samples of if the client's very happy yeah

269

so if the client's like i love this hat it's perfect it's just too expensive great take

270

that sample ship it over to china and have the factory go

271

and show the replicate it the best they can what's a

272

really really good sourcing agency like make how much cash can they produce i mean i know sourcing agencies

273

that do hundreds of millions of dollars in sales a year

274

wow i mean like yeah i know people with sourcing agencies

275

that have 80 million dollar houses in hong kong you know

276

so you can make a ton of money i met a

277

guy in hong kong recently he started like at my age pretty much just going to China, starting to selling products.

278

He was growing the sourcing agency, eventually got to the point where he started buying minority stakes into some like headwear factories

279

and started really focusing on that category and close, you know, like people like Nuera as clients.

280

So you start going after really, really big business.

281

There's kind of two ways you can go with it.

282

You can either resell the product and have your margin baked into it, or you can have a flat percentage basis and then make the money off of all the production that you're managing.

283

So he kept on growing, growing, getting bigger

284

and bigger clients, really understanding the niche having the best pricing out there at the point for

285

that less quality of hat and then built it, built it, built it into doing, you know, he does hundreds and hundreds of millions of dollars a year now.

286

That's crazy.

287

What's the main thing when you buy a factory that you need to know or buy interest in a factory?

288

It's a tricky thing.

289

It's something I don't recommend.

290

You just start out like, okay, this is what I'm going to do.

291

I'm going to start buying a factory because most people

292

that I know that bond factories have failed miserably

293

and have burned themselves pretty significantly unless you're going to go and live there at the factory.

294

I'm not going to be able to do things that we wouldn't be able to.

295

So lead times, samples, getting created, like what's the main benefit?

296

I would say pricing and also quality.

297

So like for example, my dad, the benefit of him having the factory in China was to

298

be able to produce the highest quality power inverters in the world

299

so that he could get the licenses for the big brands and really offer a product that wasn't available in the market.

300

So he really focused on engineering and R&D.

301

And that was his main stress was that he kept on going to China.

302

He had an e-commerce brand.

303

He was selling these inverters and kept on going to China.

304

I was really stressed out because he can never get the quality that he wanted to in the market.

305

So he just said, screw it.

306

I'm just going to make open up my own factory and make sure the quality is perfect.

307

Yeah, that's incredible.

308

Well, man, you know, you shit.

309

Very happy to have your own daily mentor.

310

Your guidance has been crazy for all of these brands as well.

311

So I appreciate it.

312

Yeah, of course, man.

313

It's been a pleasure.

314

Cheers.

ดาวน์โหลดแอป

ทุกอย่างที่ต้องใช้เพื่อพูดได้คล่อง

AI ให้คะแนนการออกเสียงให้คะแนนทุกประโยค

ฝึก IPAเชี่ยวชาญทุกเสียง

คำศัพท์สร้างคลังคำของคุณ

เกมคำศัพท์เล่นไปเรียนไป

สแกน QR

Download on theApp Store Get it onGoogle Play

ช่องเดียวกัน

How I Went from $500 to Half a Billion in 5 Years

Business EnglishTeensUniversity Students

FOR YOU

วิดีโอแนะนำ

389 ประโยค

Inside Chinese Factories (How E-commerce Brands Make Millions)

Business EnglishWorking Adults

1204 ประโยค

$100 to a $1 Million Barber Empire: How Alexi Michael Became The World's Most Viral Barber

Business EnglishInterview EnglishWorking Adults

11 ประโยค

How the next generation at the family-run ‘White Flower Oil’ is shaping its future

Business EnglishWorking Adults

167 ประโยค

Why I left America for good

Business EnglishDaily ConversationUniversity Students

220 ประโยค

I Copied A Huge App. Now I Make $80K/Month

Business EnglishDaily ConversationWorking Adults

236 ประโยค

how I built a $2.7M brand using a.i (my actual product, website, ads, viral videos)

Business EnglishWorking Adults

20 ประโยค

Bán hàng toàn cầu & vận hành toàn cầu: Khác biệt ở đâu?

Business EnglishWorking Adults

บริบท & ข้อมูลพื้นฐาน

ในวิดีโอนี้ เราได้พบกับไอแซค ผู้ซึ่งเป็นที่รู้จักในโลกโซเชียลมีเดียในฐานะผู้เชี่ยวชาญด้านการจัดหาสินค้า เขาได้แชร์ประสบการณ์และความรู้เกี่ยวกับการเป็นเอเจนต์จัดหา ซึ่งช่วยให้ผู้ประกอบการอีคอมเมิร์ซสามารถค้นหาสินค้าที่เหมาะสมกับธุรกิจของตนได้ ไอแซคได้เริ่มต้นการเดินทางของเขาจากการขายพัดลมพกพาให้กับนักศึกษาหญิงในงานปาร์ตี้ จนมาถึงการจัดหาสินค้าให้กับแบรนด์อีคอมเมิร์ซที่ใหญ่ที่สุดในโลก จากประสบการณ์ทั้งหมดนี้ เขายังแชร์คำแนะนำที่มีค่าในการเริ่มต้นการดำเนินธุรกิจแบบใหม่อีกด้วย

5 วลีสำคัญสำหรับการสื่อสารในชีวิตประจำวัน

"Where do you get that?" - คุณได้มาจากที่ไหน?
"That's so cool!" - นั่นเจ๋งมาก!
"I sell fans." - ฉันขายพัดลม
"Would you like one?" - คุณต้องการอันหนึ่งไหม?
"I'm sold out right now." - ตอนนี้สินค้าหมดแล้ว

คู่มือการติดตามทีละขั้นตอน

การเรียนรู้ภาษาอังกฤษผ่านการทำตามเสียงจากวิดีโอนั้น เป็นวิธีที่มีประสิทธิภาพในการพัฒนาทักษะการพูดของคุณ โดยเฉพาะอย่างยิ่งเมื่อคุณนำเสนอเนื้อหาที่ใกล้ตัว เช่น การจัดหาสินค้าในวิดีโอนี้ ด้านล่างนี้คือวิธีการที่คุณสามารถฝึกฝนด้วยการชาโดว์อิ้งภาษาอังกฤษ:

เลือกวิดีโอ: เริ่มจากการเลือกวิดีโอที่คุณสนใจ และตรวจสอบให้แน่ใจว่าคุณสามารถเข้าใจเนื้อหาเบื้องต้นได้บ้าง
ฟังและอ่าน: ฟังเสียงจากวิดีโอพร้อมกับการอ่านบทบรรยาย ถ้ามี เพื่อให้เข้าใจความหมายและน้ำเสียง
ทำตามเสียง: เริ่มฝึกพูดตามเสียงเป็นคำหรือประโยค โดยใช้วลีจากวิดีโอที่คุณเลือก
บันทึกเสียงของคุณ: ทำการบันทึกเสียงในขณะที่คุณชาโดว์เสียง ดังนั้นคุณจะสามารถฟังและเปรียบเทียบว่าคุณพูดอย่างไรบ้าง
ซ้อมซ้ำ: ทำซ้ำขั้นตอนนี้หลาย ๆ ครั้ง จนกว่าคุณจะรู้สึกมั่นใจและคล่องแคล่วในการพูด

การใช้เทคนิค shadowspeaks ในการฝึกพูดภาษาอังกฤษจะช่วยให้คุณสามารถพัฒนาทักษะการพูดที่ดีขึ้นได้อย่างมีประสิทธิภาพ ลองฝึกตามขั้นตอนเหล่านี้ในshadowing site ที่คุณเลือก และคุณจะเห็นความเปลี่ยนแปลงในทักษะการพูดของคุณ!

ไวยากรณ์ในวิดีโอนี้

โครงสร้างที่ผู้พูดใช้บ่อยที่สุด พร้อมคำพูดจริงจากวิดีโอ:

โครงสร้าง	ในวิดีโอ
Present perfect continuous have/has been + -ing — การกระทำที่เริ่มก่อนหน้านี้และยังดำเนินอยู่	I've always been sourcing · have been growing · we've been curating
ประโยคเงื่อนไข if + อนุประโยค, will/would + กริยา — เงื่อนไขและผลลัพธ์	if you were starting out, how would you · if you follow the steps, you will not
Present perfect have/has + กริยาช่อง 3 — เหตุการณ์ในอดีตที่ยังเกี่ยวข้องกับปัจจุบัน	have racked · has become · it's been
Passive voice be + กริยาช่อง 3 — เน้นสิ่งที่เกิดขึ้น ไม่ใช่ผู้กระทำ	be made · is centered

เทคนิค Shadowing คืออะไร?

Shadowing เป็นเทคนิคการเรียนรู้ภาษาที่ได้รับการรับรองทางวิทยาศาสตร์ พัฒนาขึ้นสำหรับการฝึกนักแปลมืออาชีพ วิธีการนี้เรียบง่ายแต่ทรงพลัง: คุณฟังเสียงภาษาอังกฤษจากเจ้าของภาษาและพูดตามทันที — เหมือนเงาที่ตามผู้พูดด้วยช่วงเวลาห่าง 1-2 วินาที การวิจัยแสดงว่าเทคนิคนี้ปรับปรุงความแม่นยำในการออกเสียง ทำนองเสียง จังหวะ การเชื่อมเสียง การฟังเข้าใจ และความคล่องแคล่วในการพูดได้อย่างมีนัยสำคัญ

เทคนิค shadowing: อ่านคู่มือฉบับเต็มทีละขั้นตอน →

ฝึกพูดภาษาอังกฤษด้วยเทคนิค Shadowing จากวิดีโอ: How He Makes Millions Sourcing Products From China

เลือกโหมดฝึก

ดาวน์โหลดแอป

How I Went from $500 to Half a Billion in 5 Years

Inside Chinese Factories (How E-commerce Brands Make Millions)

$100 to a $1 Million Barber Empire: How Alexi Michael Became The World's Most Viral Barber

How I Make $100,000+ Per Week

I Started With $600... Now I Make $10B/Year

How and WHEN to HIRE People to Build your Business with Upwork? Outsourcing 101

Học từ vựng tiếng Anh ngành May mặc cùng các Shark | Ms Hoa TOEIC

Influencer Sascha 97 Oct25

How the next generation at the family-run ‘White Flower Oil’ is shaping its future

Why I left America for good

I Copied A Huge App. Now I Make $80K/Month

how I built a $2.7M brand using a.i (my actual product, website, ads, viral videos)

Bán hàng toàn cầu & vận hành toàn cầu: Khác biệt ở đâu?

บริบท & ข้อมูลพื้นฐาน

5 วลีสำคัญสำหรับการสื่อสารในชีวิตประจำวัน

คู่มือการติดตามทีละขั้นตอน

ไวยากรณ์ในวิดีโอนี้

เทคนิค Shadowing คืออะไร?