"Have you tried meditation and ways to improve your internal energy?" If the man's body is weak, it might be helped through cultivation methods that Xie Lian grew up using. But not everyone can be a cultivator and he knows that well enough. But they might still help Senku a little if given a chance.

The potato peeling seems to be going well again, pieces of the skin falling away. He is giving it the same attention he gave the last potato but trying to make sure he doesn't take away too much of the actual potato.