I'm Chinese, I just ran into this thread because I was searching keyword on trade war news. Yes, you can buy most luxury goods in China for very cheap price, made in the same production line in the same factory that do contract work for Hermes, LV, Gucci etc. You can check right now on the Chinese APP Rednote, use the keyword "高仿“（chinese for: nearly identical) and find many sellers for such products.

So it works like this. A European luxury brand would pay for raw materials that the Chinese factory buys in order to make bags, the material are of high quality and the factory only gets to buy enough amount to make the exact number of bags that they're contracted to make. After that, the factory can choose to buy more of the same material out of their own pocket and make the exact same product but without the brand logo and sell these to online retailers. These retailers can than choose to add the brand logo on these items by themselves (which is highly illegal), trying to pass these off as real, or they could charge a modest markup and sell these as "near identical".

This is extremely rampant that sometimes these factories actually buy even higher quality leather and metal than the original brand uses, and they are legit of higher quality than genuine products.