229 CE
May – Battle of Jianwei: The state of Shu Han is victorious over the state of Cao Wei. Eastern Wu merchants reach Vietnam; ocean transport is improved to such an extent that sea journeys are made to the Liaodong Peninsula and the island of Yizhou. Emperor Alexander Severus and Dio Cassius are joint Consuls.
Geopolitics & Diplomacy
- June 23 – Chinese warlord Sun Quan formally declares himself emperor of the Eastern Wu state. The city of Jianye (modern Nanjing) is founded as the capital of Eastern Wu. The independent kingdoms in Cambodia and Laos become Eastern Wu vassals.source
- Emperor Alexander Severus and Dio Cassius are joint Consuls.source
Conflict & Security
- February – May – Battle of Jianwei: The state of Shu Han is victorious over the state of Cao Wei.source
Exploration & Expansion
- Eastern Wu merchants reach Vietnam; ocean transport is improved to such an extent that sea journeys are made to the Liaodong Peninsula and the island of Yizhou.source
Science & Discovery
- Ammonius Saccas renews Greek philosophy by creating Neoplatonism.source