from one thing, know ten thousand things

Do not regret what you have done

Fourthly, the way of the artisan. The way of the carpenter is to become proficient in the use of his tools, first to lay his plans with true measure and then perform his work according to plan. Thus he passes through life.

from one thing, know ten thousand things

When you attack the enemy, your spirit must go to the extent of pulling the stakes out of a wall and using them as spears and halberds.

To cut and slash are two different things. Cutting, whatever form of cutting it is, is decisive, with a resolute spirit. Slashing is nothing more than touching the enemy.

The path that leads to truth is littered with the bodies of the ignorant.