Reference
Exactly what Wu can train, build and research, by age.
Infantry and Naval civilization
•Military production buildings and Docks provide +55 food
•Infantry regenerates 10/15/30 HP per minute in Feudal/Castle/Imperial Age
•Jian Swordsmen and Hei Guang Cavalry +2 attack in Imperial Age
•Careening, Dry Dock free
Team bonusHouses built +100% faster
50 units · 27 buildings · 70 technologies. Each building carries what it trains and researches; upgrades sit under what they upgrade from.