Mugwort, also called moxa, is used in moxibustion, a common treatment in China. We'll talk about its uses, history and how such a helpful plant got such an ugly name! 
艾草（又名“艾绒”）在中国常用于艾灸疗法。今天我们将聊聊它的用途、历史，以及这样一种有益的植物为何会有如此古怪的英文名！