It should be episode 11 when Moxibustion Gentlemen appears. To replace Xia Tian, ??Grandpa invited Moxi Gento to use the Sky-shaking Technique to deal with the ghost dragon, but it was only shown in the last 12 episodes of 11 that he failed to exorcise the demon

Episode 29, 41 minutes Grandpa said: "I heard that moxibustion guy say that his leader is a gourmet expert and it's super delicious..." Then after the leader came in episode 30, he really liked Xiong's dishes