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Construction is a City skill which can be learned at the university. This skill increases construction speed of buildings. At every level, construction speed is increased by 2%. The maximum boost at level 20 would be 40%. The boost can go up to 60% at level 30, although a level 30 university can only be built in a famous city.

The time it takes to build any particular building is given by this formula:

where t is the original (base) time given, c is the construction level, and s is the amount of skill points of the governor.

For instance, for a level 15 village takes 3:45:12 base time (225.2 minutes), a construction level of 20, and a governor skill level of 214, we have (225.2 minutes) / (1 + 20 * 0.02 + 214 * 0.005) = 91.17 minutes, or 1:31:11.