Lelang was one of the Chinese commanderies which was kept in the Korean Peninsula over 400 years until Goguryeo conquered it in 313 A.D. History In 108 B.C. Emperor Wu of the Han Dynasty conquered the area under Ugeo (右渠), a grandson of Wiman. The Emperor set up Lelang, Lintun, Xuantu and Zhenfan, known as the Four Commanderies of Han (漢四郡) in the Korean Peninsula. The Book of Han records Lelang belonged to Youzhou, located in northwestern Korea consisted of 2… (More on Lelang)