"Artemisia annua is one of the raw materials of Yinzi. Every year on Qingming Festival, many people will make seals to worship their ancestors. " Chen Yilin, a villager, said that every time he went to Tomb-Sweeping Day as a child, he could smell the silver fragrance of Kawamura. It is understood that "Yinzi" is a unique folk custom of "Chuancun". The "Yinzi" made of Artemisia annua is a necessary food for the residents of "Chuancun" to worship their ancestors in Qingming Festival, and it is listed as a special food of five major folk festivals together with Yuanxiao, Zongzi, moon cakes and Chongyang cakes.

"The custom of offering silver in Kawamura is an intangible folk custom in Yangzhou. This custom has been going on for hundreds of years in Chuancun. The reporters named Chen, Mao and Li followed Chen Yilin to a resident's house. I saw that the residents washed and cooked the heads of Artemisia annua picked from the ground, mixed them with glutinous rice flour into green dough, wrapped them with various stuffing, inverted them with special carved wooden molds, shaped them into cakes, and then propped them up with rectangular bamboo shoots and put them in a steamer, thus making a "mark".