7 events the sources record for this year, grouped by region.
What happened
China (7)
Shibi Khan surrounded Yanmen with several hundred thousand cavalry, and the emperor was besieged until the siege was lifted in the ninth month. (History of the Northern Dynasties (Beishi), Annals 北史 卷12 大業11年)
The bandit chief Meng Rang took refuge at Duliang Palace; Wang Shichong, Assistant Administrator of Jiangdu Commandery, defeated him and captured all his followers. (Book of Sui (Suishu), Imperial Annals 隋書 卷004 帝紀 大業10年12月)
Shibi Khan of the Turks prepared to ambush Emperor Yang with several hundred thousand cavalry; Princess Yicheng warned him, and Emperor Yang rushed to Yanmen. (Book of Sui (Suishu), Imperial Annals 隋書 卷004 帝紀 大業11年8月)
The Turks besieged Yanmen; imperial troops fought repeatedly but were at a disadvantage, and Emperor Yang was greatly frightened. (Book of Sui (Suishu), Imperial Annals 隋書 卷004 帝紀 大業11年8月)
Li Zitong, a bandit from Donghai, led his band across the Huai River, proclaimed himself King of Chu, and attacked Jiangdu. (Book of Sui (Suishu), Imperial Annals 隋書 卷004 帝紀 大業11年10月)