"Don't succumb to the obstacles of ghosts and gods, and practice your own sword as always. Isn't this the limit of martial arts?"
There are some people like this. Whether they have a weak heart or are missing a leg, they will not give in under any conditions and move forward courageously towards their specific goals.
There are also some people who, even if the hand holding the weapon becomes twisted, will not give in to fate, but will work harder to refine the weapon. Some of them have reached the limit in their respective weapon fields, and people call these ghost swordsmen "sword souls".