《汉书·纪·高帝纪上》
秦丞相赵高惊恐，就杀掉秦二世，派使来见沛公，想相约平分关中之地，沛公拒绝了。
秦相赵高恐，乃杀二世，使人来，欲约分王关中，沛公不许。
Zhao Gao, the prime minister of Qin, was frightened. Therefore he killed Qin Ershi, sent an envoy to see the General of Pei, and wanted to make an agreement to divide Guanzhong area equally, but was rejected by the General of Pei.