It's better to eat noodles on a rainy day. There's a slang in the north, which is called "jiaozi lies on its head, and pancakes stand on its eggs on its feet". The custom of eating noodles during the Fu-ri period began at least in the Three Kingdoms period. According to Wei's Spring and Autumn Annals, He Yan's "lying in the sun, taking a towel to wipe his sweat and looking Jiao Ran" made people realize that He Yan's white skin was naturally white, not covered with powder. The "soup cake" here is hot soup noodles. Why eat hot noodles in hot weather? In the Southern Dynasties, Liang Zonggu said in The Record of Jingchu's Age:

"June eclipse soup cake, called evil."

May is an evil month, and June also touches the edge of the evil month, so it should also be "evil". This is a superstition. Grinding new wheat into flour and cooking soup, you will sweat after eating. The new grain is rich in nutrition, and sweating can drive away diseases. It is scientific to eat soup cakes in June.

In dog days, you can not only drink hot noodle soup, but also eat water. Boil the cooked noodles with cold water, mix with garlic paste and pour with halogen seeds, which not only stimulates appetite, but also "defeats the heart."

Foley can also eat "fried noodles". The so-called fried noodles, is to use a pot to fry the flour dry and cooked, and then mix it with water and sugar to eat. This way of eating has existed in the Han Dynasty. It was more common in the Tang and Song Dynasties, but at that time, the wheat was cooked first, and then the pasta was ground. Su Gong, a medical scientist in the Tang Dynasty, said that fried noodles can "relieve heat, stop diarrhea and strengthen the large intestine".

It is a traditional custom to eat jiaozi on your head, because when it's raining, people's appetite is not good, and they can't eat anything, and jiaozi is the food to stimulate their appetite and satisfy their appetite in the traditional customs of China people.