18 events the sources record for this year, grouped by region.
What happened
China (17)
At Taozhu, Erzhu Rong slaughtered Empress Dowager Ling, the infant emperor, Chancellor Yuan Yong, Prince of Gaoyang, and about two thousand ministers and nobles (the Heyin Incident). (History of the Northern Dynasties (Beishi), Annals 北史 卷5 永安元年)
Emperor Xiaoming died in the Xianyang Hall at the age of 19; a newborn princess was passed off as a prince, enthroned, and then immediately deposed. (Book of Wei (Weishu), Imperial Annals 魏書卷9·武泰元年)
The Heyin Incident: Erzhu Rong massacred Empress Dowager Ling, Liu Zhou, the Prince of Gaoyang, and more than two thousand other officials and nobles. (Book of Wei (Weishu), Imperial Annals 魏書卷10·永安元年)
In the eleventh month of the twenty-second year, Mononobe no Arakahi fights the rebel Iwai in Mii district of Tsukushi and kills him (Nihon Shoki (Chronicles of Japan) 日本書紀 卷第十七 継体紀 22年 단락38)