《太平广记·卷一百八十六·铨选二》
唐玄宗天宝十年十一月，杨国忠为右相兼吏部尚书。上奏玄宗请求在西京长安、东京洛阳两京选人授官，玄宗答应了。
天宝十载十一月，杨国忠为右相，兼吏部尚书，奏请两京选人，铨日便定留放，无少长各于宅中引注。
In the 10th year of the Tianbao reign of Emperor Xuanzong of the Tang Dynasty, Yang Guozhong was appointed right prime minister and concurrent minister of the ministry of personnel. Yang submitted a memorial to Emperor Xuanzong requesting to select officials in the two capitals of Chang'an in the west and Luoyang in the east, which Emperor Xuanzong approved.