Lmao China has both minimum wage and worker’s unions (literally the CPC can be considered one giant worker’s union).
The real reason things are so cheap in China is that it has spent the last 50 years building its productive capacity specifically so that commodities can be affordable for everyone, and everyone has a job that will allow them to afford that. The US, on the other hand has spent the same period ensuring the entire economy works to enrich a few people at the cost of everyone else.