"Missing" Mystery (3)
§10,
In the previous section, through the "fear" mentality, we preliminarily deduced that the reason why Xiao Hu went to the rooftop to observe many times before he disappeared was probably someone in the two-story simple building in front of the dormitory building.
But there is also the opposite situation, that is, the "curiosity" mentality, which is also consistent. Suppose Xiao Hu accidentally saw something in the dormitory on the third floor, so he would go and see it again whenever he had the opportunity for several days. And going to the 5th and 4th floors is probably to avoid being discovered.
§11,
If there is a causal relationship between the "recording pen" received on the 9th and going up to the 5th floor for several consecutive days on 11, 12, 13, and 14, then the most likely reason is that while Xiao Hu is "fearful", he is also actively observing the "Chemistry Building" to look for opportunities to place or retrieve the recording pen.
In summary, Xiao Hu didn’t know that someone had already discovered it through monitoring, and finally took action on Friday. The first step was to “turn off” a probe—that is, the monitoring (blind spot 2) that stopped working at 17:53.
§12,
The following is logical reasoning.
①The blind spot where Xiao Hu disappeared is the truth.
② The reason why Xiao Hu did not arrive at the evening self-study class at 18:05 is that there is a possibility that "someone" actively intercepted the "conversation" on the way in the "blind spot" (due to understanding, he could only obey without resisting).
③ In the end, it is possible to be forced into a car in the "blind spot", or to go back to the "chemistry building" (this is proof by contradiction, see the picture below).
④ It is difficult to judge whether a single person "committed the crime" or multiple people. Roughly one person watches the surveillance and one person intercepts it on the road. (Don’t know the location of the monitoring room? If the distance to the “blind spot” is very close, then it may be a single person).
⑤ The time period when Xiao Hu disappeared was about 17:50~18:05, plus a 10-minute flexibility, then all the people and vehicles entering, leaving and leaving the blind spots 1 and 2 during the time period of 17:40~18:15 that day are all subjects of investigation (relying on surveillance and investigation outside the blind spots), and there should be witnesses and suspects.
(The above is an exclusive reasoning, corrections are welcome, and I look forward to the day when the truth will be revealed)
