820
820 — China: February — Emperor Xianzong of Tang dies, probably from being poisoned by eunuchs; his son Li Heng succeeds him and becomes Emperor Muzong of Tang
4 events. The text is the source chronology verbatim; the terms are in Sources & licenses. The grey lines above and below are the surrounding 2 years.
| KoreaNorthern and Southern States period 698–918 | ChinaTang dynasty 618–907 | JapanHeian period 794–1185 | United States |
|---|
- No events recorded for this year
- 818발해 선왕 즉위
- 822신라에서 김헌창의 난이 일어남
| - February — Emperor Xianzong of Tang dies, probably from being poisoned by eunuchs; his son Li Heng succeeds him and becomes Emperor Muzong of Tang
- Dương Thanh rebels and seizes Đại La
- February — Xianzong died, possibly after being poisoned by one of his eunuch officers.
- February — Xianzong's son Emperor Muzong of Tang became emperor of the Tang dynasty.
- 819全國節度使服從。藩鎮割據局面暫告結束。
- 819Tibetan Empire attacks Qing Prefecture
- 821Princess Taihe, 17th daughter of Emperor Xianzong of Tang, marries Kün tengride ülüg bulmïsh alp küchlüg bilge of the Uyghur Khaganate
- 821Tibetan Empire attacks Tang but are driven off by the governor of Yan Prefecture
- 821Tang and the Tibetan Empire sign a treaty of non-aggression with the Tang recognizing Tibet's ownership of the Western Regions as well as the Longyou and Hexi regions in what is now Gansu Province
- 822The Uyghurs send troops to help the Tang fight against rebels, but their aid is refused; the Tang pay them 70,000 pieces of silk to go home.
| - No events recorded for this year
| covered from 1607 |