11 events the sources record for this year, grouped by region.
What happened
China (6)
Gao Shen, governor of Beiyuzhou, defected to Western Wei by holding Hulao. In the 3rd month, Yuwen Tai besieged the southern city of Heqiao. (Book of Northern Qi (Bei Qishu), Annals 北齊書 卷2)
On the 3rd month, day wushen, at Mangshan he crushed the Western Wei army, captured more than 400 officers from the commander down, and killed or took 60,000 prisoners. Gao Huan then lost his horse and was in peril, but escaped (Battle of Mangshan). (Book of Northern Qi (Bei Qishu), Annals 北齊書 卷2)
The king of Linyi defeated Dezhou and attacked Li Bi, but Li Bi's general Fan Xiu defeated him at Jiude, and the king of Linyi fled. (Book of Liang (Liangshu), Annals 卷3 大同九年 四月)
The Battle of Mangshan: Gao Huan crushed the army of Yuwen Tai, beheading or capturing more than sixty thousand. (Book of Wei (Weishu), Imperial Annals 魏書卷12·武定元年)
He breaks Gao Huan's army with a night raid at Mangshan, but the left army under Zhao Gui and others is at a disadvantage, so he withdraws at night (Book of Zhou (Zhoushu), Imperial Annals 周書 卷2 大統9年3月)
Egypt & North Africa (1)
In the seventeenth year, Cyrus and Sergius (son of Bacchus) became governors of Pentapolis and Tripolis; an incident in which they deceived Moorish envoys. (Procopius, History of the Wars 4.21.1)
Southern Europe (3)
Khosrow goes to Adarbiganon and, by negotiation, seeks an invasion of Armenia near the temple. (Procopius, History of the Wars 2.24.2–2.24.3)
In the district of Dubios, eight days' journey from Theodosiopolis, an incident happens in a place with many merchants. (Procopius, History of the Wars 2.25.1)
Totila took Naples and, to relieve the starving citizens, regulated food distribution and took humane measures. (Procopius, History of the Wars 7.8.1)