Xuedongmatani River

Xue conquered the East and attacked Koguryo. In the first year of 668 AD, Xue and others led troops to capture Pyongyang and captured King Gaozu of Koguryo. In Koguryo's hometown, the Tang Dynasty set up 9 states and 42 states 100 county, with Anton as the governor and Xue as the commander in chief.