Who is related to the solar terms in Grain Rain?

Who is related to the solar terms in Grain Rain as follows:

Cang Xie.

Sacrificing Cang Xie is a custom in Grain Rain, so why should we sacrifice Cang Xie on Grain Rain Day? That's why I brought Grain Rain Festival to worship Cang Xie. I hope it helps you.

About 4000 years ago, Emperor Xuanyuan was acclaimed as the leader of the tribal alliance by tribal leaders, and he named Cang Xie Zuo Shi. After Cang Xie became a historian, he used different kinds of shells and knots as markers to record events. However, as Cang Xie is responsible for more and more affairs, the old methods are far from meeting the demand, and Cang Xie is very worried.

One day, Cang Xie and an old hunter went out hunting and came to a fork in the road. The old man pointed to the footprints of various wild animals left on the ground and told him where the wild animals were going.

"A footprint can represent a wild animal," Cang Xie thought. "Can I use coincidence to represent a transaction?" After returning home, Cang Xie packed his bags and went out for a visit. Along the way, he waded through mountains and rivers, not ashamed to ask questions, and expressed everything he saw according to its characteristics. He spent a year working hard and finally went home with a full load.

It is said that when Cang Xie came home, he closed the door and stayed out for three years. He drew all the figures collected along the way with branches in the yard. To this end, he used up all the dry branches around Yangwugou.

The success of Cangjie's word-making has greatly promoted the development of society and brought light to the progress of mankind. This touched the jade emperor. At that time, many families could not make ends meet, so he ordered the heavenly soldiers to open the granary of the Heavenly Palace, and it began to rain. People were finally saved. ...

After Cang Xie's death, people buried him in the north of Shiguan Town, Baishui County, far away from the Yellow Emperor's Mausoleum in Qiao Shan. There is a couplet engraved on the door of the tomb: "Su Yu felt the emperor of heaven in those days, and the same text matched the bridge with Lingyong." People set the day of offering sacrifices to Cang Xie as the day of going down to Grain Rain, which is now the Grain Rain Festival.