foreign government subsidies undercutting local production and tarrifs are the wat to level the field.
Also, lack of labor, safety, and environmental regulations. Chinese companies literally own slaves, no worker can't compete with free. Combine that with safety and environmental, you get cheap manufacturing.
As a guy with an actual office job. It's usually 8-5 or 9-6 with an hour lunch, plus whatever time you spend on coffee or whatever.
It's pretty standard, and it's been that way for a couple decades at least.