《礼记·明堂位》
崇国的鼎、贯国的鼎、夏后氏的横，封父国的龟甲，这本来是天子拥有的重器。
越棘，大弓，天子之戎器也。夏后氏之鼓，足。
The tripod of Chongguo, the tripod of Guanguo, the yoke of Xiahou, and the tortoise shell of Fengfu were originally the important weapons owned by the emperor.