Lelang was one of the Chinese commanderies which was established after the fall of Wiman Joseon in 108 BC until Goguryeo conquered it in 313. Though disputed by North Korean scholars, Western sources generally describe the Lelang Commandery as existing within the Korean peninsula, and extend the rule of the four commanderies as far south as the Han River (Korea). However, South Korean scholars assumed its administrative areas to Pyongan and Hwanghae region.