Reference
Exactly what Shu can train, build and research, by age.
Archer and Siege civilization
•Lumberjacks generate food in addition to wood
•Archery Unit technologies at the Archery Range and Blacksmith cost -25%
•Siege Weapons and Siege Warships move +10/15% faster in Castle/Imperial Age
Team bonusFoot Archers +2 line of sight
49 units · 27 buildings · 70 technologies. Each building carries what it trains and researches; upgrades sit under what they upgrade from.