The next morning, the Underground Man searches every corner of the house, looking for the missing people. He finds none, except for a mysterious man who looks like a businessman. The Underground Man tells him that the table has been moved outside the house. He says that he thought the tunnel was long enough to get out, but he realizes that he didn't realize that aunt hong still knew about the hidden tunnel. He asks if he's getting along with the Underground Men, and he says he doesn't know whether he is helping them or not. He's not sure whether Gusu is helping him or not, he says, but Gusu bears responsibility from the thousand years of the family's principle. He also says that the tunnel's symbol is the hand fan of gusu, which means that he probably has other plans in his mind, otherwise why would he want to oppose director lian, who is the only one who acknowledged the tunnel. Director lian says that Gusu must be scheming something, otherwise he wouldn't oppose him. He then asks if the box is called the Xuanji box, because it's stored in it. It's a key that can only be opened by using a specific key. The key is the same key that was used to open the box when it was first opened by empress Xiao. The box was left by someone else, and it was just left there by someone who asked someone else to keep it