12 events the sources record for this year, grouped by region.
What happened
China (3)
Xu Sheng, a man of Kuaiji, claimed to be the King of Yue and invaded commanderies and counties; the Yangzhou Inspector Zang Min and others suppressed him. (Book of the Later Han (Hou Hanshu), Annals 後漢書卷8 孝靈帝紀 熹平1年)
Sun Jian, as Commandant of the Commandery, gathered over a thousand elite troops and, with the county and commandery, defeated the demon bandit Xu Chang (the Yangming Emperor) who had risen in Gouzhang of Kuaiji. (Records of the Three Kingdoms (Sanguozhi) 吳書 孫破虜討逆傳 (卷46) 熹平1년)
In the eleventh month, Xu Sheng, a bandit of Kuaiji Yaoyu, proclaimed himself Emperor Yang Ming in Juzhang, and his followers numbered tens of thousands. The Governor of Yangzhou, Zang Min, and the Danyang Governor Chen Yin were sent to suppress him. (Zizhi Tongjian (Comprehensive Mirror) 資治通鑑 卷057 (원문 단락 #4608, 172년))
Egypt & North Africa (1)
The Boukoloi defeated the Roman army and nearly took Alexandria; Cassius, coming from Syria, split them apart and pacified them (Cassius Dio, Roman History 72(71).4.2)
Southern Europe (7)
Marcus stayed in Pannonia and received barbarian envoys: the Quadi made peace (13,000 captives returned), an alliance was made with the boy tribe of the Batavarii, and access to markets was denied (Cassius Dio, Roman History 72(71).11)
Barbarians settled in Italy rose in revolt at Ravenna and seized the city; Marcus never again admitted barbarians into Italy and even expelled those already settled (Cassius Dio, Roman History 72(71).11)
The Marcomanni won a battle in which Marcus Vindex, the praetorian prefect, was killed; Marcus set up three statues for him and, after defeating the enemy, received the title Germanicus (Cassius Dio, Roman History 72(71).3.5)
The Egyptian herdsmen (Boukoloi) revolted under the priest Isidorus, stirring up the Egyptians (Cassius Dio, Roman History 72(71).4.1)
The Quadi surrounded the Romans, who suffered from thirst and heat; a sudden downpour with hail and lightning saved Rome (attributed to the Egyptian magician Arnuphis or to a Christian legion) (Cassius Dio, Roman History 72(71).8)
After the rain victory Marcus was hailed imperator for the seventh time by the soldiers; breaking Senate custom, he accepted it as a gift and sent a dispatch (Cassius Dio, Roman History 72(71).10)
Avidius Cassius checks the Bucolici warriors who were causing unrest in Egypt (Historia Augusta Marc. 21.2)
Western Europe (1)
Marcus holds out three full years at Carnuntum, ends the Marcomannic War, in which the Quadi, Vandals, Sarmatians and Suebi joined, and frees the Pannonians. (Eutropius, Breviarium Eutr. 8.13)