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150
100
220sAvailable for 1 civilization
Anti-unit siege weapon. Fires bolts that pierce multiple units.
ChineseProduced by
Weapons
Greased Axles: Increase the movement speed of siege engines by +15%.
Roller Shutter Triggers: Increases Springald attack speed by +30% and grants +10% Ranged Resistance.
Military Academy: Increase the production speed of infantry, cavalry, siege, and transport units at buildings by 33%. Does not affect religious units or other support units.
Siege Works: New carpentry techniques increase the health of siege units by +20%.
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