You need to dry mugwort plants and put them into your blender. You will experience that it is not possible to make powder, you will get some cotton from it.
Roll the material very tight in any paper (about 8-10mm diameter), close it with little rubber rings.
Rub your belly button with gano oil and put a slice of ginger on it. Now light up the moxa stick and wait some minutes until it glows.
Put the moxa stick with light pressure on the ginger slice. This treatment can reduce pains in stomach, period pains, stomach cramps etc… in cold (yin) symptoms.