Sorry but the Chinese culture breeds disease. I'm jot talking about just the filthy markets, but day to day loving. Prior to my career change I spent 8 months in Asia.
The Japanese and South Koreans levels of cleanliness are leaps and bounds ahead.
Washing hands , covering one's mouth, etc... are foreign concepts. I have never been anywhere that I felt this way. People walked out of bathrooms as if the sinks were not there.
At multiple places people eat they will literally wipe a bowl out with a rag they have on their shoulders or counters and fill it with your food.
Nasty