You Call This a Sword?

Zhou Mu has two problems in his life: First, his awakened soul is a wall. Secondly, every night someone comes to him in his dream and asks: "Young man, do you want to learn swordsmanship?" That man calls himself the Sword Ancestor, but the weapon he uses is the Mo Dao. Zhou Mu: You call this a sword? Sword Ancestor: Everything can be a sword. Zhou Mu: What about the wall? Sword Ancestor: ... Also.