6 events the sources record for this year, grouped by region.
What happened
China (4)
Emperor Xuanzong died at the age of 50 in Daming Palace, and Prince Yun was made crown prince and ascended the throne. (Old Book of Tang (Jiu Tangshu), Annals 舊唐書 卷18下 大中13年 8月)
After Emperor Xuanzong died, the eunuch Wang Zongshi enthroned the Prince of Yun, Wen (Yizong). (New Book of Tang (Xin Tangshu), Annals 新唐書 卷008 穆宗~宣宗 大中13年8月)
The province of Noto reports by post horse that the Balhae audience-envoy party of 104 persons has arrived at Suzu district. (Nihon Sandai Jitsuroku 卷第二 貞觀元年1月廿二日 (원문 2.20))
Because the Balhae envoys reached Noto, an edict moves them to a suitable place in Kaga province for lodging. (Nihon Sandai Jitsuroku 卷第二 貞觀元年2月四日 (원문 2.30))