Industry Secrets Summarized by Others

• Ever-hiring coaches = never-hiring long-term coaches (take a moment to think about that)
• Actually, Pinduoduo is often more expensive than Taobao, and their tricks are next level.

  (H峥, you old trickster)

• Buying diamond rings is the biggest scam. You might not even get 4,000 yuan back if you sell one you bought for 20,000. If it comes down to it, buying gold for weddings is the real deal!

  (Did your wife agree to wear a gold ring at the wedding?)

• Senior Property Investor:

  It’s better to use an agent to buy a new house. You can not only get the rock-bottom price but also receive a kickback!

  (This feels a bit shady, doesn't it? Most agents just make hard-earned money too, right?)

• Ragpickers’ Forum:

  Winter vacation homework usually isn't checked. Sell the scrap paper (I hope you’re talking about industry secrets).

• Clothes shown in livestreams are made of completely different fabric and workmanship from what you actually receive. (Now there's no need to binge-buy while watching streams)
• A mining engineer said:

  Electric cars aren’t environmentally friendly. Electric cars aren’t environmentally friendly. Electric cars aren’t environmentally friendly.

  Think about how lithium batteries are made.

  (I feel like electrification is the trend of the times)

• When buying medicine, try to avoid Sunflower, Renhe, Xiuzheng—these are just brand-name products produced by contract factories. A box might cost only a few dollars to produce, but customers pay sixty or seventy!
• Toilets usually have two flush settings: high and low. Actually, you can use the low setting to flush solid waste too.

  (Hardly anyone notices this, does it?)

• Eating donkey meat pie: If the meat is red, it has been soaked in alum. (Are you a vegetarian?)
• Keep a close eye on your elderly relatives. Don’t go collect free eggs, rice, and other giveaways—you know what happens next.
• Tiles Expert:

  Many well-known tile brands are not produced in their own factories (some don’t even have their own facilities!). They’re actually produced by small factories under their label!

• Wainscoting during renovation is a total rip-off: It’s useless and not environmentally friendly.

  (Did you pay your taxes?)

• Avoid going out to eat on crowded holidays or specially seeking out extremely popular restaurants. The busier the chef, the lower the quality of the food!

  (But I love the lively atmosphere. That’s just human nature, right?)

• When visiting a dental hospital, some teeth have arrested decay or just stain in the grooves—they don’t need fillings. However, some clinics may recommend fillings just to make money. And once filled, if you don’t brush properly, secondary cavities can form even more easily.
• If you know the bakery owner when buying a cake, you might not necessarily get a deal. But if you know the cake decorator, you’ll definitely get the best value: cheapest filling, most cream, most fruit, the most heartfelt decoration, and the freshest cake base!
• Without being corrupt, people in the system won’t have luxury mansions or supercars. (Another obvious truth)
• Many pet groomers just rinse the dogs and then spray them heavily with perfume once dried. (I don’t keep pets anyway)
• Pharmacies will only push high-margin drugs on you. The exact same medicine in different packaging can cost 40 yuan more. Two drugs with the same effect—one costs 7.8, the other 30+. When I interned there, I always gave customers the cheapest option just to see them happy. (Bravo)
• I work in tourism. Many people post ads for cheap shopping tours. These low-price tours almost always involve hidden spending, so don’t join them—especially tours departing from Kunming, which are mostly shopping tours.
• In the legal profession nowadays, prosecutors often encourage people to plead guilty and accept punishment. For those whose evidence is insufficient and whose expected sentences might not be low, prosecutors may promise probation if the defendant pleads guilty.

  However, note that in some cases now, defendants who have pleaded guilty find that the prosecutor backs out or the court rejects the prosecutor’s sentencing recommendation. At that point, the already-convicted defendant cannot change their plea.

  Of course, I hope none of you ever need this advice.

原文：https://www.v2ex.com/t/918928#reply14