Emperor Muzong of Tang

Emperor Muzong of Tang 唐穆宗
Emperor of the Tang dynasty
Reign	February 20, 820[1][2] – February 25, 824
Predecessor	Emperor Xianzong
Successor	Emperor Jingzong
Born	26 July 795[1]
Died	25 February 824(824-02-25) (aged 28)[1][2]
Burial	Guang Mausoleum (光陵)
Consorts	Empress Gongxi (m. –824) Empress Zhenxian (m. –824) Empress Xuanyi
Issue	Emperor Jingzong Emperor Wenzong Li Cou Li Rong Emperor Wuzong Princess Yifeng Princess Huaiyang Princess Yan'an Princess Jintang Princess Qingyuan Princess Raoyang Princess Yichang Princess Ankang
Full name Family name: Lǐ (李) Given name: Originally Yòu (宥), later Héng (恆) (changed 812) Era name and dates Chángqìng (長慶): February 9, 821[1][2] – January 29, 825[2][3] Posthumous name Emperor Ruisheng Wenhui Xiao (睿聖文惠孝皇帝) (full) Temple name Mùzōng (穆宗)
House	Li
Dynasty	Tang
Father	Emperor Xianzong
Mother	Empress Yi'an

Emperor Muzong of Tang (July 26, 795^[1] – February 25, 824^[1][2]), personal name Li Heng, né Li You (李宥) (name changed 812), was an emperor of the Tang dynasty of China. He reigned from 820 to 824. Emperor Muzong was the son of Emperor Xianzong. He was created crown prince in 812 during the reign of Emperor Xianzong and, after Emperor Xianzong was allegedly assassinated by a eunuch, Li Heng was proclaimed emperor in 820.

After succeeding to the throne, Muzong spent his time feasting and heavily drinking, thereby neglecting his duties as emperor. Meanwhile, the temporarily subdued regional military governors (jiedushi) began to challenge the central Tang government, leading to the new de facto independence of three circuits north of the Yellow River, which Emperor Xianzong had subdued. Internally, corruption was rife.

Emperor Muzong's brief reign came to an end in 824, and was viewed as the start of the downward spiral of the Tang dynasty.