《资治通鉴·陈纪·陈纪九》
隋文帝忧惧，就下敕书令沿边增修要塞屏障，加固长城，又任命上柱国武威人阴寿镇守幽州，京兆尹虞庆则镇守并州，驻守数万军队以防备突厥。
隋主患之，敕缘边修保障，峻长城，命上柱国武威阴寿镇幽州，京兆尹虞庆则镇并州，屯兵数万以备之。
Emperor Wen of Sui was worried and frightened, so he issued an edict ordering the construction of fortresses and barriers along the border, and strengthened the Great Wall. He also appointed Yin Shou, a man from Wuwei as Shangzhu Country, to guard Youzhou, and Yu Qingze, Minister of Jingzhao Yin, to guard Bingzhou, and stationed tens of thousands of troops to guard against the Turks.