Now that he's got the key ingredient, Gu Buchi wants to know what it is that he needs to camouflage his identity. He asks the young man if he wants to take blood from his heart. The young man says he doesn't want to see his friend suffer like this again. He wants to use the blood to kill the worm that loves to drink blood. He also wants to make sure that the blood won't get into the insect, which is a dangerous thing to do if you're in the middle of a fight with the worm. He tells him to take the antidote on time. He then tells him that he was lying to him when he said he was sick three days earlier in the lord's mansion. The doctor cured his legs, which had been sick for years, thanks to his good karma. He's worried that the people of the pavilion will find out about his secret. He says he can hide the antidote in the palace, but if he goes to the palace he'll do what he says. The two men walk around the city together.