Been to China in 2018 and we went hiking in south Zhejiang, been like 8 hours hiking that day and hungry as f***, descended to the nearest town-ish looking place there was and entered the first restaurant we came across.
Apparently they had like midday break or something because we were the only guests and the staff played mahjong or smth.
So my friends and I ordered way to much dishes but stuffed everything in anyway. Then came the moment were I teased them with a fish's eye ball and wobbled it around with my chopsticks before eating it. Like my friends were seemingly disgusted but I felt like pranking atm.
I went to lavatory and then it struck me like lightning, the hygiene certificate was crimson red and it was the first time I felt like not so good.
In China there is a ABC hygiene ranking for restaurants, with a red unhappy smiley place being generally 50/50 chance if you get stomache ache afterwards.
Bottom end, out of all my friends I was the only one who got 2 weeks of food poisening and I'm sure it was this stupid fish eye.
Always check for hygiene certificate of restaurant.