It was first written by Zhang Yuansu, the teacher of Li Dongyuan, in "The Origin of Medicine": "Chuanxiong should be used for headache. If it doesn't heal, each medicine should be added, such as Vitex negundo, Radix Angelicae Dahuricae of Yangming, Radix Bupleuri of Shaoyang, Rhizoma Atractylodis Taiyin, Herba Asari of Shaoyin and Fructus Evodiae of Jueyin. Top pain, use Ligusticum to go to Chuanxiong. "