Chiefdom of Kokang

The Chiefdom of Kokang (), ruled by the Yang clan from China, was an autonomous "Tusi" chiefdom located in modern-day Kokang, Shan State, Myanmar.
History.
The state was officially founded by Yang Shien-tsai (楊獻才/杨献才, Yáng Xiàncái); who began his reign in 1739 in and around Ta Shwe Htan, then called Xingdahu (興達戶/兴达户, Xīng Dáhù), and took the title "Chief of Xingdahu". He was succeeded upon his death in 1758 by his son Yang Weixing (楊維興/杨维兴), later referred to as Chief of Kho Kan Shan (科干山, Kēgàn Shān). 
He expanded his territory tenfold compared to that inherited from his predecessor. After his death in 1795, his son Yang You Gen (楊有根/杨有根, Yáng Yǒugēn) became the chief. He soon renamed the state as Kokang and titled himself Heng of Kokang.
In 1840, Yang Guohua (楊國華) was given the title "the Hereditable Magistrate of Guogan (Kokang) County (世襲果敢縣令)" by the Chinese Qing dynasty.
The Heng was succeeded after his death in 1874 by his younger brother Yang Guozheng (楊國正/杨国正), who ruled peacefully and began relations with Britain upon the annexation of Upper Burma. In 1916 he went blind, and abdicated in favor of his nephew Yang Chunrong (楊春榮/杨春荣, Yáng Chūnróng). The new ruler then took the Burmese title "Myosa" (lit. town eat, given to a prince). He died in 1927 and was succeeded by his son Colonel Sao Yang Wen Ping (楊文炳/杨文炳, Yáng Wénbǐng), Saopha of Kokang.
Rulers.
Title Heng.
After China relinquished jurisdiction on 4 February 1897, Kokang came under British protection.
Title Saopha.
During World War II, Kokang was recognized as separate from Shan State in August 1947 by the British, and the ruler took the title Saopha. He died in 1949 and was succeeded by his son Sao Edward Yang Kyein Tsai (楊振材/杨振材, Yáng Zhèncái) who was deposed by the Burmese in 1959. Before that it is part Hsenwi Saopha territory. 