Where can I buy yarrow (a tool for divination)

It seems to grow on the slopes, grasses and shrubs with higher altitude in China (in short, you can see traces in the wild Shan Ye forest, provided you know it. . . )

You can search on Taobao and contact the relevant sellers;

If it's not on Taobao,

Find a medicine farmer who is worth yarrow, a medicine company who bought yarrow, a flower market and a public flower bed.