《资治通鉴·梁纪·梁纪二十二》
西魏安定文公宇文泰回到牵屯山就病倒了。派驿马传令召见中山公宇文护。
魏安定文公宇文泰还至牵屯山而病，驿召中山公护。
Yuwen Tai, Duke of Anding of Western Wei, fell ill when he returned to Qiantun Mountain. He sent a courier to summon Yuwen Hu, Duke of Zhongshan.