7 events the sources record for this year, grouped by region.
What happened
China (1)
In May, the capital, the home provinces and the seven circuits all suffered famine and epidemics, and an edict ordered relief for the starving people. (Shoku Nihon Kōki 續日本後紀 卷第一 (원문 58번째 단락))
Japan (5)
Emperor Junna moves to the Saiin in order to abdicate. On the same day, at the hour of the snake, a great earthquake strikes; the abdication to the crown prince follows. (Nihon Kōki (Later Chronicles of Japan) 日本後紀 卷40)
In February, Emperor Junna issued a decree at the Junna-in transferring the throne to the crown prince Masara Shinnō. (Shoku Nihon Kōki 續日本後紀 卷第一 (원문 4번째 단락))
In March Emperor Ninmyō took the throne in the Daigokuden and issued the enthronement edict. (Shoku Nihon Kōki 續日本後紀 卷第一 (원문 19번째 단락))
In April, ten naturalized Silla people, men and women headed by Kim Yejin (金礼眞), were entered in the household registry at Sakyō Gojō. (Shoku Nihon Kōki 續日本後紀 卷第一 (원문 39번째 단락))
In the intercalary seventh month, Echigo Province reported that last year's epidemic had cost the sowing season, that famine and epidemics continued this year with many deaths, and asked for permission to sell and buy stored grain (tekichō); permission was granted. (Shoku Nihon Kōki 續日本後紀 卷第二 (원문 23번째 단락))
Western Europe (1)
Egbert fought thirty-five pirate ships at Carhampton; a great slaughter took place, but the Danes held the field. (Anglo-Saxon Chronicle Giles/Ingram 1847 A.D. 833 항 (pg657.txt 줄 2566))