Go out and eat jiaozi. Going out is going out in the dog days, and the dog days are over. "Fu" means that Yin qi is forced by Yang qi to hide underground, with three volts every year, and the dog days are the hottest time of the year. From the summer solstice, according to the arrangement of the dry and branch days, the third Geng day is the first time. The fourth Geng Day is the mid-ambush, and the first Geng Day in beginning of autumn is the first day of the last ambush, which lasts for ten days.

jiaozi is a traditional food in northern China. Jiaozi originated from the ancient slot. Jiaozi, formerly known as Jiaoer, was first invented as a medicine by Zhang Zhongjing, a doctor in Dengzhou, Nanyang, Henan Province, China, with a history of more than 1,8 years. It is a traditional special food deeply loved by the people of China, also known as dumplings. It is the staple food of the people in northern China and local snacks, and it is also a New Year's food. There is a folk song called "A slight cold, eat jiaozi for the New Year." Jiaozi is often boiled with flour and leather bag stuffing.