The solar term commemorates the creation of characters in Cangjie.

The solar term commemorating the creation of characters in Cangjie is Grain Rain.

It is recorded in Shuo Wen Jie Zi and Shi Ben that Cang Xie was a left historian who created Chinese characters in the era of the Yellow Emperor. Inspired by the footprints of birds and animals, he classified, collected, arranged and utilized them in different ways, which played an important role in the creation of Chinese characters and was known as the "saint who created Chinese characters". The Yellow Emperor issued an imperial edict in late spring and early summer, announcing the success of Cangjie's word-making, and millet was sown that day. Grain Rain is the name of the solar term, because the word "Cang Xie" was first created, which touched the sky and made the rain produce hundreds of valleys.

The custom of solar terms in Grain Rain

In Grain Rain, the customs of Grain Rain tea, visiting Grain Rain, offering sacrifices to Wenzu and Cang Xie, and eating Toona sinensis are widely spread. Spring tea (cigarettes) collected in southern Grain Rain is called "Grain Rain tea". It is characterized by fragrance and the best taste.

There is a custom of eating Toona sinensis in the north, and Toona sinensis was listed around Grain Rain. There was a custom of "going to Grain Rain" in ancient times. On this day, young women in Grain Rain visit relatives in the village, or go for a walk in the wild and then come back, which means the integration of nature and physical health.