At this time, Chen Weibin saw a passing male cleaner through the gap in the middle of the iron fence, and quickly shouted: "Master, hello! Excuse me......"

Li Jun immediately put away his mobile phone and shouted: "Master! ”

The cleaner heard someone calling him, glanced at the iron gate, then walked to the side of the iron gate, looked at Chen Weibin and Li Jun strangely, and asked, "What are you doing?" How is it outside? ”

Chen Weibin immediately took out his ID, showed it to the cleaner, and said, "We are the police, we are investigating some things, do you have the key?" Can you open the door? ”

"It's the police!" The cleaner said as he untied a bunch of keys from his belt, took one from it, unlocked the door, and then pulled the latch and the door opened.

"Thank you!" Chen Weibin and Li Jun walked into the park with gratitude.

"No thanks!" The cleaner closed the iron door again and asked curiously, "How did you get in?" ”

"We ...... from over there," Chen Weibin said, pointing to the approximate location of the guillotine intersection thirty meters away, "and slid down from the top of the stone wall." ”

"Oh, it's there! I know that junction, and that's the only way to slip down. The cleaner nodded.

Suddenly, Li Jun found that on the edge of the fence next to the iron gate, there was another old iron fence gate, which was the same style as the new iron fence gate.

"Detachment Chen, look ......" Li Jun pointed to the old iron gate.

Chen Weibin immediately walked to the side of the old iron gate and took a closer look. I saw that the iron bars on the old iron door were already rusty, and several of them were almost corroded, and they could be broken with a little force. In the lower part of the iron gate, several iron bars have been broken, forming a large hole large enough for an adult to pass through. In the middle of the iron gate, there is still a very old iron lock.

"May I ask ......" Chen Weibin walked up to the cleaner who had just finished locking the door, pointed to the old iron gate leaning against the wall, and asked, "When was that old iron door replaced?" ”

"Like...... It's been more than two months. The cleaner replied.

"More than two months!" Chen Weibin was a little alert.

"I'm in charge of cleaning and plant maintenance for this area." The cleaner pointed around and continued, "One day more than two months ago, I saw that the iron bar in the lower part of the iron gate was broken, and it was a big hole, so I was worried that some ignorant children would go out to play through the iron gate, which would affect safety, so I told the comrades in the park management office, and they quickly replaced the new door. ”

"That'...... I would like to ask, is the time to replace the new door as soon as the old door is broken, or is it changed after it has been broken for a while? Chen Weibin asked.

"I'm sure it's a new door when the old door breaks."

"Oh? Are you so sure? Li Jun interjected.

"I work here during the day, going back and forth to clean and maintain the plants, I don't go far, everything here is familiar to me, even if there is a lack of grass, I know, of course I will know if the iron gate is broken." The cleaners were confident.

"But ......," Chen Weibin paused and asked, "You haven't been staying by the iron gate, how can you be so sure that you will change it as soon as it is broken?" ”

The cleaner pointed to a house about ten meters next to the iron gate and said, "That room is our cleaner's dormitory, and I and a few co-workers live there at night. When I came out of the house that morning to start cleaning, I could clearly see that the old door was still in good condition. However, at noon, for some reason, the lower part of the old door suddenly broke, and a few broken iron bars were next to the iron gate. Even if there was a slight delay between the time the iron gate broke and when I found it, I don't think it would have been more than ten minutes. Then I called the park service. Moreover, I was very worried that something would happen if the iron gate broke, so I stayed here and never left. The comrades from the park management office moved quickly, and the iron gate was replaced after an hour. ”

"Then do you remember what time it was at noon that you found out that the old door was broken?" Chen Weibin asked.

"I remember this, it was almost twelve o'clock in the afternoon, and it was time for lunch. I usually have lunch in that dormitory, but that day I moved a chair outside to guard the bad door, and sat on the chair to eat while looking at the iron door. So, I was very impressed. ”

Chen Weibin nodded and continued to ask, "Is there any other way to go outside the wall besides this iron gate?" ”

"No more. As soon as you go out of this iron gate, there is a dry ditch, and above the dry ditch is a very high stone wall, and you can't go down anywhere except the place where you have slid down. In addition, Qingzi Park is a mountain park, walk along the fence outside the iron gate, whether it is left or right, you can't go far, you can't go through, the dry ditch is blocked by the mountain outside the wall, and it is impossible for people outside to enter. ”

"Oh, that's right! Thank you, master! Chen Weibin thanked the cleaner and led Li Jun to the exit of the park.

Chen Weibin walked around the park and watched. The park is huge, with surveillance cameras only at some intersections and almost none in other places. Moreover, this green park is an open park, and in some places it is even directly connected to the street. For Qin Guitian, Qingzi Park is indeed a good plan to escape.

"Do you remember when Zhou Yuanliang's body was taken from his home by the funeral home?" Chen Weibin asked as he walked.

Li Jun recalled for a moment and replied, "My impression is that it was about half past eleven in the morning. ”

Chen Weibin quickly sorted out the logic of time.

"I figured it out, why didn't Qin Guitian come back to pick up the wig later." Chen Weibin motioned for Li Jun to sit on a chair in the park together, and continued, "The rusty iron bars under the old iron door are already very unstrong, and it is easy for an adult man to break the iron bars. Qin Guitian waited in Fumanlou until Zhou Yuanliang's body was taken away by the funeral home, and then began to flee, and when he came to the iron gate, it was almost twelve o'clock at noon. Then, taking advantage of the gap where no one was around, he broke the iron bar and got into the park. I thought he must have gone out of the park to find a long-rod tool, and then went back to the iron gate, ready to drill out again to get the wig. However, he never expected that the cleaner was very dedicated, and he had been guarding the iron gate and did not leave, and he could not find a chance to get out of the wig. ”

"Yes, judging from the cleaner's retelling just now, Qin Guitian really doesn't have a chance." Li Jun nodded.

Chen Weibin continued: "Soon, Qin Guitian, who was guarding near the iron gate, saw that the park management office had replaced the iron gate with a new one. The new gate was so strong that it could no longer break the iron bar, and it was impossible to get out.

"He could have smashed the lock in, too?" Li Jun asked.