This object is an offering made by Emperor Xizong and is simply referred to as the “tortoise” in Yiwuzhang（the inventory）. Some believe it is a container for tea powders. However, the hole at the mouth of the tortoise suggests it is probably an incense burner. The image of smoke coming out of the mouth of a tortoise is found on a incense burner also unearthed from Famensi. In 1990, a tortoise case was found among the Tang-dynasty silver hoard in Fanzhi county, Shanxi province, which probably has a similar function. The body of the tortoise is hammered and connected to the head and tail by welding.