(“Fú Jiān” (Chinese: 苻堅/苻坚; 337–385), courtesy name Yonggu (永固) or Wenyu (文玉), formally Emperor Xuanzhao of (Former) Qin ((前)秦宣昭帝), was an emperor (who, however, used the title “Heavenly Prince” (Tian Wang) during his reign) of the Chinese/Di state Former Qin, under whose rule (assisted by his able prime minister Wang Meng) the Former Qin state reached its greatest glory—destroying Former Yan, Former Liang, and Dai and seizing Jin’s Yi Province (益州, modern Sichuan and Chongqing), posturing to destroy Jin as well to unite China, until he was repelled at the “Battle of Fei River” in 383)
(for a variety of reasons, the Former Qin state soon collapsed after that defeat, and Fú Jiān himself was killed by his former subordinate, Yao Chang the founding emperor of “Later Qin”, in 385)