Kangxi Emperor (Shengzu of Qing)
Also called: Shengzu of Qing, Xuanye
Fourth Qing emperor (r. 1661–1722), who crushed the Three Feudatories, took Taiwan, signed the Treaty of Nerchinsk with Russia and brought Mongolia under Qing rule
Third son of the Shunzhi Emperor, he is said to have been chosen as heir partly because he had survived smallpox. Four regents governed at first, but in 1669 he arrested Oboi and took power himself. He campaigned in person against Galdan of the Dzungars and made six tours of the south. So keen was his interest in Western learning that he studied mathematics and astronomy with Jesuit missionaries. His 61-year reign was the longest of any Chinese emperor, but his last years were troubled by his sons’ struggle for the succession.