Duan Heyu

Emperor Xianzong of Dali 大理憲宗
Emperor of Dali
Reign	1108–1147
Predecessor	Duan Zhengchun
Successor	Duan Zhengxing
Grand Chancellors	Gao Taiming (高泰明) (1108–1116) Gao Taiyun (高泰運) (1116–1119) Gao Mingshun (高明順) (1119–1129) Gao Shunzhen (高順貞) (1129–1141) Gao Liangcheng (高量成) (1141–1147)
Born	1083
Died	1176 (aged 92–93)
Full name Family name: Duan (段) Given name: Yu (譽) or Heyu (和譽); later changed to Zhengyan (正嚴) Dharma name: Guanghong (廣弘) Era dates Rixin (日新): 1108–1109 Wenzhi (文治): 1110–1121 Jiayong (嘉永): 1122–1128 Baotian (保天): 1129–1137 Guangyun (廣運): 1138–1147 Posthumous name Emperor Xuanren (宣仁皇帝) Temple name Xianzong (憲宗)
Dynasty	Dali

In this Chinese name, the family name is Duan.

Duan Heyu
Traditional Chinese	段譽
Simplified Chinese	段誉
Transcriptions Standard Mandarin Hanyu Pinyin Duàn Yù

Duan Yu (1083–1176), courtesy name Heyu, also known by his temple name as the Emperor Xianzong of Dali, was the 16th emperor of the Dali Kingdom, reigning between 1108 and 1147. Following a family tradition, Duan's father, Duan Zhengchun, abdicated and became a monk in 1108. Duan succeeded his father as the emperor of Dali and renamed himself Duan Zhengyan (段正嚴). He abdicated and became a monk in 1147 and was succeeded by his son Duan Zhengxing.

In fiction

Further information: List of Demi-Gods and Semi-Devils characters

Duan Yu is fictionalized as one of the main characters in the wuxia novel Demi-Gods and Semi-Devils by Louis Cha.

• Portrayed in Demi-Gods and Semi-Devils by Kent Tong (1982)
• Portrayed in Demi-Gods and Semi-Devils by Eddie Kwan (1991)
• Portrayed in Demi-Gods and Semi-Devils by Benny Chan (1997)
• Portrayed in Demi-Gods and Semi-Devils by Jimmy Lin (2003)
• Portrayed in Demi-Gods and Semi-Devils by Kim Ki-bum (2013)
• Portrayed in Demi-Gods and Semi-Devils by Bai Shu (2021)