Press a, and the main skill interface will appear. I play 18mugua, and it is taboo to add masters in it. After some skills are added to the master, the attack will be improved, but the strange area will be reduced. So there is an announcement on the website telling you how to add a master. Every time you add a main icon, it will light up. At the same time, to practice the master, * * 200 points. Go and see for yourself. Have a good time.