First of all, food hygiene in China is worrying. In the vegetable market in China, you can see pork lying on the table all day, unpacked and not frozen. Vegetables are also scattered on the dirty ground at will, close to piles of rotten vegetables. Flies and other pests fly everywhere.
Secondly, the kitchen hygiene in China is very poor. In the west, many restaurants are open kitchens, and chefs cook behind transparent glass. However, in China, most hotel kitchens are closed and opaque, and it is difficult for diners to see the operation of the kitchen, so there are often problems such as dirty floors and old and rusty cookers. At the same time, the chef cuts vegetables and meat in the same place. Foreigners think that the cooking techniques in China are too unsanitary, which is unacceptable to foreigners who are very concerned about kitchen hygiene.
Thirdly, the dining experience in restaurants in China is poor. There are many roadside stalls and so-called fly restaurants in China. When eating, you can see flies and insects flying around. Diners talk loudly, make noise loudly, and people come and go. Moreover, many restaurants do not smoke, and the smoke inside is so thick that it is difficult to breathe. The dining experience is poor, and such a noisy dining environment makes foreigners find Chinese food unacceptable.
In a word, according to western standards, restaurants and markets in China are far below their expectations for hygiene.