What are the contents of China's influence on Korean and Japanese food culture? Please give an example.

Chopsticks! Eat with chopsticks 1. In Japan, because the traditional diet includes sushi and fillets, it is necessary to separate the fish from the fishbone with the tips of chopsticks. (Japanese students gave me several pairs of their chopsticks, and the front ends of the chopsticks were polished with frosting, which can increase friction and facilitate food grabbing, and the details are intimate. ) 2. Because Korea often eats barbecues, the general materials are easy to burn out, and they are all metal. On the other hand, many Korean diets, including kimchi, are fermented and semi-fermented. If you use wooden chopsticks for a long time, the color and taste will change. Why is it flat? In Korea, the wife is used to putting chopsticks on the top of her husband's small square table, so flat chopsticks are not easy to slip off.