Dangerous rock is to use the existence of unfavorable sons to divert attention. In order to prevent the ex-son from exerting his strength and preventing your from contacting, you will develop in the other direction. The cliff is to change your direction and thinking. For example, a son of the second route intrudes into your space, and you want to stop him from blocking his outside. When he dies, you call back. By the time he finished eating your son, you had turned around and stopped him. You used this plastic surgery.

Treating loneliness refers to working for his weak son or rushing out of the blockade within the other party's sphere of influence.

A circuitous attack is also an attack method. The main idea is to break chess. Beginners can easily form a line when playing chess, and opponents can easily make room. So the circuitous attack is aimed at each other's weaknesses. It is not a line, nor a concentrated movement, but an all-out attack around the opponent's chess game from all directions. Learn slowly. This is deeper.