Eating jiaozi on the head means "Yuan Baofu". Dong Fangshuo in the Han Dynasty said in the annotation of "Suburb Sacrifice" that "the person who lies down means that Yin Qi will get up, but he can't open it because of the setting sun, so he lies down because his name lies above the sun." In other words, after the summer solstice, the weather is getting shorter and shorter day by day, and the yin qi is radiating. Because the afterglow of the sun has not passed and suppressed the yin qi, the weather is still very hot.

"In summer, the third watch is scolded". Geng Xu belongs to gold, Geng Xu is the sun, and the cross is shaped like an ingot, which belongs to Jin Jinbao, and "Fu" is homophonic with "Fu". So the homonym for eating jiaozi in the head means "Yuanbao Fu".

Introduction.

"Three volts" and "three summers" (summer, summer and midsummer in the 24 solar terms) both represent high temperature and extreme weather, and the curves on the time axis and the temperature axis are basically the same: summer comes, summer comes; When the sky falls, summer is over. The reason why the ancients called the extremely hot day of the year "summer heat" and found a "fu" to accompany it, in addition to the cultural meaning, another important purpose is for health care.