How to build your Citadel with highest build points

For better results on construction citadel (market, tech or soul exchange), you must put your best five heroes on the troop, this mean, the top lane of your electable heroes should be in there, also when you choice them, there's an option for use an 8 hours building card (mark the square for use it) instead the normal 3 hours.

For example if u had 1 troop in the citedal with 200000 power.
You will gain 20000 points every 3 hours.