What do you mean by "dog"

"Ya" is a Chinese character, and its pinyin is shéshě, also known as "Ya" and "Arithmetic Ya", which is an ancient way of divination.

In ancient times, people used yarrow to predict good luck.

Yarrow: [Yarrow] is a perennial herb, the whole grass can be used as medicine, and the stems and leaves can be used as medicine (commonly known as "tiger grass" and "saw grass").