Sun Degong

Change of allegiance

Sun Degong served under the Ming Guangning governor Wang Huazhen as a central-camp youji, a military officer. During the Later Jin offensive in western Liaodong in 1622, he secretly communicated with Nurhaci. Following the collapse of the Guangning defence, Sun participated in receiving the Later Jin army as it entered the city. The episode was part of the disintegration of the Ming frontier position, not an ordinary interdepartmental transfer of service.

Later administration and petitions

After submitting to the Later Jin, Sun continued to hold a military officer's grade, was initially registered under the Bordered White Banner, and took responsibility for surrendered people before moving to Yizhou. During Hong Taiji's reign he submitted petitions concerning the practical difficulty of building fortifications during severe winter weather, shortages of clothing material for soldiers, tobacco restrictions, and the effect of limits on grain sales. He argued that building would be more effective after the spring thaw and that allowing grain trading would ease hardship among poorer households. These memoranda place his activity within questions of military logistics and civilian subsistence, not merely the event of his surrender.

In 1634 Sun received recognition for his earlier contribution at Guangning and a third-grade meiren janggin rank, and he died soon afterward. His sons, including Sun Youguang and Sun Sike, had separate later careers, changes of registration, and hereditary-title histories. Achievements after the Qing conquest of Beijing or nomenclature revised during the Qianlong reign should not be transferred retrospectively to Sun Degong.