Gongsun Kang, a
warlord in
Liaodong, separated the southern half from the
Lelang Commandery and established the Daifang Commandery sometime between 204 and 220 CE to make administration more efficient. He controlled southern natives with Daifang instead of Lelang. In 238 CE, under the order of
Emperor Ming of
Cao Wei,
Sima Yi defeated the Gongsun family and annexed Liaodong, Lelang and Daifang to Wei. A dispute over the control of southern natives caused their revolt. The armies of Lelang and Daifang eventually stifled it. Daifang Commandery was inherited by the
Jin dynasty. Due to the bitter civil
War of the Eight Princes, Jin became unable to control the Korean peninsula at the beginning of the 4th century. Zhang Tong (張統) broke away from Jin in Lelang and Daifang. After
Luoyang, the capital of Jin, was occupied by the
Xiongnu in 311, he went for help to
Murong Hui, a
Xianbei warlord, with his subjects in 314.
Goguryeo under
King Micheon annexed Lelang and Daifang soon after that. == Area ==