If we're talking about legal statutes, the 1994 Labor Law established an 8-hour workday. But in all my years in China, I've rarely seen companies actually adhere to an 8-hour workday—except for government agencies and foreign enterprises. As we say, it's LaborLaw.txt, not LaborLaw.exe. The same applies to the Supreme Court guidelines you mentioned.
As for the trade union issue, you should look into the Jasic incident — it almost shattered the illusions held by most of China’s establishment leftists.Jasic Incident
What you're saying about Chinese schools teaching Marxism and prohibiting students from forming Marxist clubs isn't contradictory. Students are required to memorize and then take exams, but beyond that, they must forget what's in the books.Peking University Marxist Sosiety At that time, it wasn't just Peking University—my friends at Nanjing University and Renmin University of China witnessed the same thing.
There are multiple sources of information regarding the conditions of Chinese laborers, though even Western media outlets are reluctant to cover the topic. But you claim my comments are unsourced—it seems you've never cared about information related to Chinese laborers, only being interested in high-speed rail? https://chuangcn.org/ https://feed.laborinfocn7.com/ https://yesterdayprotests.com/
Everything I've experienced becomes misinformation when reported by the media, and unsourced when ignored. That's how you privileged Western leftists erase the existence of China's marginalized communities.