Lan Ke’s magic tricks are so wonderful that he can achieve success several times in one game. Since he came out of the cave, he was invincible, and he could spare others and spare others. ——Song Dynasty. Yu Wenbao's "Spit Jade Collection. Chang Tan Source" The last sentence is to be merciful and to be merciful is the finishing touch. Be a person and do things in a measured way. Giving others a way out is also leaving a way out for yourself.