6 events the sources record for this year, grouped by region.
What happened
China (2)
Li Ying, Commandant of the Directorate, and more than two hundred others were falsely accused of being partisans and imprisoned (the Partisan Proscriptions). (Book of the Later Han (Hou Hanshu), Annals 後漢書卷7 孝桓帝紀 延熹9年)
Zhang Sheng of Henei predicted amnesties by divination and had his son commit murder; Li Ying, Commandant of Divine Ritual, arrested and executed him. The eunuchs had Lei Shou, a disciple of Zhang Sheng, accuse Li Ying and others of consorting with Taixue students and slandering the court. (The first Party Prohibition.) (Zizhi Tongjian (Comprehensive Mirror) 資治通鑑 卷055 (원문 단락 #4548, 166년))
Southern Europe (4)
6,000 Langobardi and Obii crossed the Ister (Danube) but were utterly routed by the cavalry and infantry; the Marcomanni sent envoys to Iallius Bassus, governor of Pannonia, swore oaths and made peace (Cassius Dio, Roman History 72(71).3.1)
Lucius demands that Marcus share the triumph, and the two emperors hold a triumph (after Lucius's death Marcus took only the title Germanicus) (Historia Augusta Marc. 12.8, 12.9)
The long-postponed Marcomannic War breaks out before the Parthian War has ended (Historia Augusta Marc. 12.13)
Reluctant to leave Syria, he returns to Rome and shares the triumph with his brother (Historia Augusta Ver. 7.9)