The qualification of a general is related to the level and force value of the general, and the higher the level, the higher the potential qualification. For example, I have a level 20 red Guan Yu, his current qualification is 21, I let him go to the school to train for a while, he became level 36, and then I use the qualification Dan to help him wash his qualification, his qualification is easy to become 29.

Simply put, you have to bring up the level of the general's level and the value of the force, and then use the qualification Dan to wash the qualification. I also recommend that you use the qualification pills at least once every time you level up 5 or more.