Jiashen Incident in the context of "Southern Ming"

Zheng Chenggong (Chinese: 鄭成功; pinyin: Zhèng Chénggōng; Pe̍h-ōe-jī: Tēⁿ Sêng-kong; 27 August 1624 – 23 June 1662), born Zheng Sen (鄭森) and better known internationally by his honorific title Koxinga (國姓爺), was a Southern Ming general who resisted the Qing conquest of China in the 17th century and expelled the Dutch from Taiwan, founding the Kingdom of Tungning.

Born in Japan to a Chinese father and a Japanese mother, Zheng rose through the Ming court via the imperial examinations and was serving as a Guozijian scholar in Nanjing when Beijing fell to rebels in 1644. He swore allegiance to Longwu Emperor, who favored and granted him the royal surname Zhu in 1645, a name he proudly used instead of his native Zheng surname for the rest of his life, hence popularizing his aforementioned honorific name. He was made the Prince of Yanping (延平王) by the Yongli Emperor in 1655 for his stern loyalty and numerous anti-Qing campaigns. He was best known for defeating the Dutch East India Company's colonial state on Taiwan, who had been harassing and raiding his maritime supply lines, at the Siege of Fort Zeelandia in 1662 and established a dynastic state on the island that continued to exist until 1683. After defeating the Dutch, he died suddenly in 1662 while planning to invade Luzon in retaliation for the Fourth Sangley Massacre committed by Spanish colonists in the Philippines.

The Yongli Emperor (1623–1662), personal name Zhu Youlang, was the fourth and last emperor of the Southern Ming dynasty, reigning in turbulent times when the former Ming dynasty was overthrown and the Manchu-led Qing dynasty progressively conquered the entire China proper. He led the remnants of the Ming loyalists with the assistance of peasant armies to resist the Qing forces in southwestern China, but he was then forced to exile to Toungoo Burma and eventually captured and executed by Wu Sangui in 1662. His era name "Yongli" means "perpetual calendar".

Zhu Youlang was the son of Zhu Changying (朱常瀛), the seventh son of the Wanli Emperor, and Empress Dowager Ma. He inherited the title Prince of Gui (桂王) from his brother and lived an obscure life as a minor member of the Ming imperial family until the rebellions of peasant armies, which resulted to the fall of the imperial capital, Beijing, and the suicide of the last Ming emperor, Chongzhen, after the peasant rebel leader Li Zicheng captured Beijing in 1644. The true beneficiaries of the collapse of the Ming were the Qing dynasty, ruled by the emerging nation Manchus from Manchuria. After mass defection from Ming remnants, including a former Ming general, Wu Sangui, who allowed the Qing forces to pass the Ming Great Wall against Li Zicheng. The Qing forces defeated the peasant armies and rapidly expanded to northern China, the Lower Yangtze valley, and Central China. The Ming loyalists continued to resist in southern China, with several former Ming royal members regrouping in the south in attempt to re-establish the Ming governance, but all failed before the rapid Manchu military advance. Youlang ascended the throne in Zhaoqing as the fourth Southern Ming emperor in November 1646.