7 events the sources record for this year, grouped by region.
What happened
China (4)
Liu Bei killed Yang Huai and seized Fu; he defeated Liu Gui and Zhang Ren, whom Liu Zhang had sent, and drove them back to Mianzhu. (Records of the Three Kingdoms (Sanguozhi) 蜀書 先主傳 (卷32) 建安17년)
In the fifth month, on the day guiwei, Ma Teng, the Minister of the Guards, was executed with his entire three-generation clan. (Zizhi Tongjian (Comprehensive Mirror) 資治通鑑 卷066 (원문 단락 #5344, 212년))
In the tenth month Cao Cao marched east to attack Sun Quan. Dong Shao advised, 'Since antiquity no minister who achieved so great a merit has long remained a minister, and now you stand under suspicion,' and proposed a countermeasure. (Zizhi Tongjian (Comprehensive Mirror) 資治通鑑 卷066 (원문 단락 #5351, 212년))
When Liu Bei was at Jiameng, Pang Tong said that with an elite force racing day and night to strike Chengdu directly, Liu Zhang, being unprepared, would be pacified in a single stroke. (Zizhi Tongjian (Comprehensive Mirror) 資治通鑑 卷066 (원문 단락 #5354, 212년))
Southern Europe (3)
Caracalla kills a great many of Geta's associates, including the praetorian prefect and jurist Papinian. (Herodian, History of the Empire 4.6)
Patruinus is killed in front of the Temple of Pius, and Papinian and his son (a quaestor) are also killed, their bodies dragged through the streets (Historia Augusta Carac. 4.2)
He builds the Baths of Caracalla in Rome; the architects said the circular chamber (cella soliaris) could not be reproduced (Historia Augusta Carac. 9.4)