1. Really not caring about food safety at all — ever
When in Rome, do as the romans. When in China, eat the 番茄炒蛋 (fan qie chao dan) with cigarette ashes and saliva in it. I ate everything, from anywhere, and had absolutely no concern about food safety.
My first experience in China was living at a college campus about an hour outside of Shanghai, the campus noodle shop would reuse the broth every night for the 麻辣烫 (ma la tang), leaving it uncovered for about eight hours (spicy numbing soup that is offered a la carte.) I guess they just felt that the next time they re-heated it, the boiling would take care of anything that had managed to crawl into it over night. ‘Secret ingredients,’ I guess.