During the Wei, Jin, Southern and Northern Dynasties, there was a clear written record of cooking. This is a great event in the cooking history of China and even the world. For example, in the Book of Qi Yaomin, there are two kinds of dishes: the method of frying eggs: break the eggs, put them in a copper pot and stir them yellow and white. The fine army is blue and white, and the salt rice is muddy. Fried with sesame oil. It smells good and looks good. Fried duck method: if the newborn duck is extremely fat, as big as a pheasant, its head is removed and rotten (according to the news, rotten is a mistake), but it is fishy green (the same as dirty), washed and finely made into cage meat. Slice the onion, add salt and beat it into juice. Stir-fry until cooked. Add pepper and Jiang Mo and eat it.