Anyone who celebrates his 66th birthday will eat jiaozi, and his daughter gave him a pack of jiaozi. It comes from the proverb "sixty-six pieces of meat have been lost, and this piece of meat has to be mended by children".

66-year-old jiaozi also has requirements: 6 two meats, 6 two loaves of bread, 68 jiaozi, of which 66 are 66 years old, and the other two are one in the sky and one on the ground. However, there is no tradition of celebrating 66th birthday in Wen Er. No matter what day your birthday is, you should celebrate it on the sixth day of the first month.

Jiaozi evolved from wonton. In its long development process, there are many names, such as ancient "prison pill", "flat food", "dumpling bait" and "powder horn" It was called "Crescent Wonton" in the Three Kingdoms period, "Wonton" in the Southern and Northern Dynasties, "Crescent Wonton" in the Tang Dynasty, "jiaozi" in the Song Dynasty and "Flat Food" in the Ming and Yuan Dynasties. The Qing Dynasty was called "Jiaozi".

Jiaozi originated in the Eastern Han Dynasty and was initiated by Zhang Zhongjing, a "medical sage" in Nanyang, Henan Province during the Eastern Han Dynasty. At that time, jiaozi was used as medicine, and Zhang Zhongjing wrapped some herbs in the dough to treat diseases (mutton, pepper, etc. ) to avoid frostbite of patients' ears.