Buildings are divided into resource buildings and functional buildings. Functional buildings carry the player's combat power, science and technology, alliance and other capabilities, which are the main units for the player's external combat and defense; The resources produced by resource buildings are the basis of the ability of functional buildings. Different behaviors of functional buildings will consume different amounts of different resources, and the two complete each other.In order to maximize the fairness of the game, functional buildings can not be traded and each player is unique. Resource buildings are multiple and can be traded.
The building upgrading in the game is divided into: City Hall upgrading, tavern upgrading, barracks upgrading, Academy upgrading, farmland upgrading, iron Works upgrading, woodland upgrading and Quarry upgrading. The upgrading of different buildings needs to meet different standards.
For all buildings in the main city, relevant attributes will be improved after each upgrade (for example, after upgrading the barracks, the maximum number of soldiers trained in the corresponding barracks will be increased). The recommended upgrade order is, City hall → Academy → science and Technology (attribute bonus of 4 kinds of soldiers) → barracks (increase in the number of troops trained in a single time) → economic buildings (increase in revenue) → tavern (reduce the cooling time of free recruitment). Of course, it depends according to the situation.