三国魏文帝时，有个名叫田 豫的官员，在北方边境地区 做官。当时鲜卑族部落首领素利等人经常来田豫处作客，常常以牛马作为礼物赠送予他，每次田豫都将礼物悉数交公。素利以为，先前带的牛马之类礼物太显眼，田豫不便接收，后便改送金子。一次素利秘密带了许多金子 When the Three Kingdoms Wei Wendi, there was an official named Tian Yu, an officer in the northern border region. At that time Xianbei tribes chieftain Sullivan and other people often come to Tian Yu office, often with cattle and horses as a gift presented to him, each Tian Yu gifts will be paid in full. Sullivan thought that the previous gifts such as cattle and horses too conspicuous, Tian Yu inconvenience to receive, then change to send gold. A prime secret brought a lot of gold