Shence Army
Early in the reign of Emperor Xuānzong's son Emperor Yizong, the eunuch Yang Xuanjie () became the powerful commander of the Left Shence Army (). As Yang Shou shared the same surname, Yang Xuanjie associated with him and recommended him to Emperor Yizong. In 863, Yang Shou was therefore given the designation "Tong Zhongshu Menxia Pingzhangshi" (), making him a chancellor "de facto".