You really don’t understand how “dirt poor” in America is still better than “dirt poor” in China.
Dirt poor in China literally means a dirt floor, and often dirt walls. Not dirty, but actual floors and walls made of hardened mud. No running water, no electricity, and backbreaking labour to scrape together enough rice to survive on.
Even a lot of employed Chinese people have it bad, there’s a term they use called 996 in China. 9am to 9pm, 6 days a week. It’s technically illegal but is a widespread practice for employers in China. https://en.wikipedia.org/wiki/996_working_hour_system
Even homeless people in NA have it easier than millions of these workers.
The train is for city folk to get between cities, rural folk can’t afford it.