1, after picking the chenggong, you need to pick the weeds and leaves that are mixed with it, and the leaves of the chenggong need to be dried separately, and the roots also need to be dried separately. To drying the chenggong is best to clean it first, dry the water in the sun first, and then move it to a cool and dry place to put, until it becomes withered yellow, this time you can pack it up.

2, Yin Chen is often called "white artemisia", it can be used to eat, chopped fried eggs or cold are very tasty, it is also a kind of herbal medicine, eat it can be anti-inflammatory to remove fire. This plant is very popular, a lot of people will go to pick, which leads to the wild Yin Chen is now very difficult to pick, unless you go to the kind of mountain that few people go to find.