Now that he's done training the fist for a full day, he can't even punch the fist's first echo. He's injured his arms so badly that he can barely lift them up. He finally manages to get to his secret "base" , which is a pool of "high-quality elixirs" . The pool is so hot that the skin on his arms seems to be getting tougher. The only thing that's left is a crack in the rock pool.