Wen Manman also discovered the problem with the sand, and Liu Hang was now on the third floor of the treacherous house, talking to the survivors about his judgment on why the sand was placed in the wall.

"Now that I think about it, the first time I saw the sand was actually in the room on the left hand side of the hall on the second floor of the main house, at that time, I was not injured, I dressed up as Shan Mingze and went to the tower to find the entrance and exit of the third floor that Xiao Yao said, grandpa, do you remember the scene where Xiao Yao and you accidentally met in the bathroom yesterday?"

Liu Qiaopu thought for a while and said: "I remember, yesterday afternoon, after the death of the housekeeper, we hid it from everyone, at that time, Xiao Meng was still active as Yan Muheng, and I looked at all the people in the house and didn't let them go upstairs. ”

"Yes, it was at that time that Xiao Yao told me, after Qin Sen went to the bathroom, you found that there were snowflakes on his shoulders, and then you found that the bathroom window was broken, in fact, the window was broken by Qin Sen, Xiao Yao clearly saw Qin Sen climb out of the window and didn't know what to do, and came back from the window."

"But Xiao Yao didn't tell you about it right away, because at that time, what Qin Sen's identity was, everyone still didn't know, the suspected target of killing the housekeeper didn't fall on Qin Sen's head, Xiao Yao was afraid of disturbing your thinking, so he didn't tell you."

"Later, Xiao Yao didn't listen to you, but followed the black shadow in the secret passage by himself, this black shadow is Yan Muheng who is occupied by the second personality, he handed Xixi over to the grocery store owner, and sneaked into the house by himself, Xiao Yao has been following him, only then did he find the passage in and out of the third floor in the tower, and enter from the tower, you can directly reach the room on the left hand of the hexagonal hall on the second floor of the main house."

"I took Officer Xie upstairs for the second time, and I walked there, but it also took some twists and turns, but fortunately, Yan Muheng was not controlled by the second personality at that time, and successfully cooperated with us to exchange identities. At the request of Officer Xie, I waited for Yan Muheng in the stairwell where you entered the third floor, and took him back to the first floor. ”

"Xiaohang, you wait," Xie Yunmeng said: "You said until now, you still haven't explained the use of sand, when did you find sand, and how did you guess the purpose of sand, to put it simply, to the point." ”

"Officer Xie, don't be in a hurry first, I'm going to get to the point." Liu Hang said, because of the pain, he leaned against the wall, Liu Qiaopu hurriedly reached out to support his grandson's back and lent him a hand, the old man was just stern on the surface, in fact, in his heart, his love for Liu Hang was no worse than any grandfather.

Liu Hang grabbed Liu Qiaopu's hand and continued: "The problem lies in the secret passage from the tower to the third floor of the main house, as well as the room on the second floor that I entered with Officer Xie. At that time, Officer Xie also saw that the structure there was like someone had bent the walls vigorously, and the walls were full of folds, and the whole house, I think it was probably the only place that looked like that, which was very strange. ”

"At first, I couldn't figure it out at all, but then Officer Xie smashed the wall with his fist a few times because he was impatient, and I was afraid that the people upstairs would find out, so I asked him to be lighter, and now I think about it, I should have been desperate to let Officer Xie smash the wall hard to guide the sand out."

Following Liu Hang's narration, Xie Yunmeng also recalled the scene at that time, because he was worried about Yun Yeyao, he did smash the wall with his fist, but he didn't find anything, could it be that Liu Hang went back to check that room later?

Xie Yunmeng asked, "After you sent me to the third floor, didn't you wait in the stairwell and go back to that room to check?" ”

"No, because I don't know when Yan Muheng will come down, I don't dare to leave the stairwell. Moreover, I was also very scared, afraid of Yan Muheng's second personality, until he showed me the wound in the palm of my hand, I was relieved to leave with him. There was no time to inspect at the time, but as I passed by the second floor of the main house, I was about to activate the mechanism when I noticed someone coming out of the locked door in the middle. ”