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).

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.

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.

[4] 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.