Crime scene: 162 mystery solving puzzles to find out who the murderer is

Chapter 13 The Murder on the Stargazing Tower

A terrible thing happened in the Academy of Sciences. Graduate student Yan Qinxue died on the highest platform of the Star Observation Tower, with no obvious injuries on his body.After careful examination, it was found that Yan Qinxue's right eye had been pricked by a thin poisonous needle about 3 cm long.Next to his body, there is a blood-stained needle.Judging from the situation at the scene, Yan Qinxue obviously died after pulling out the poisonous needle in his eye.This matter has not been disclosed to the public yet, and no clues have been found. Now the entire Academy of Sciences has caused a great commotion over this matter.

The Star Observation Tower is an independent unit. Moreover, the gate below is locked and cannot be opened without a key, and there is no trace of prying it open. Yan Qinxue may have locked the gate before going to the platform.So we speculate that the murderer must not have entered through the gate of the clock tower.The location of this platform is on the south side of the fourth floor. It is about 26 meters above the ground. There is a river next to the Star Observation Tower. There is also a distance of 40 meters from the clock tower to the opposite bank. Last night it was blowing a lot. Wind, even if the murderer fired a fine poisonous needle with a flute from the opposite bank, it was impossible to hit Yan Qinxue's right eye so accurately.

However, Yan Qinxue was shot in the right eye by this poisonous needle and died.So who is the murderer?And what method was used to kill people?This is really a puzzling case.

The dean of the Academy of Sciences treated Yan Qinxue's death as a suicide, and wanted to simply hold a funeral for him in the courtyard. way to commit suicide?
At this time, people in the Academy of Sciences were talking about it, especially Professor Pan, who was closest to Yan Qinxue, even disagreed with the conclusion made by the academy.So an investigation was launched, determined to find out the murderer and avenge Yan Qinxue.

From the investigation process, I know that Yan Qinxue secretly observes the activities of the stars and the moon every night on the observatory tower in order to better study everything in space. It strengthened Professor Pan's confidence and insisted that Yan Qinxue was killed rather than committed suicide.

Professor Pan investigated the students closest to Yan Qinxue, and learned that Yan Qinxue was the son of a wealthy businessman, and he had a half-brother. His father died of illness this summer, and Yan Qinxue planned to use his That legacy, all donated to the Academy of Sciences.However, Yan Qinxue's younger brother thought that his approach was quite stupid. He once threatened Yan Qinxue that if he did not stop his unwise act immediately, he would sue the court and ban Yan Qinxue's inheritance rights. "The day before this case happened, Yan Qinxue's younger brother sent a small package. Yan Qinxue didn't tell anyone what was in the package. When I came to clean the room yesterday, I didn't see the small package. Maybe, the murderer murdered Yan Qinxue in order to steal the small package." The cleaner in the courtyard said the above words to Professor Pan.

The elderly Professor Pan closed his eyes at this moment, thinking quietly, and opened his eyes again, looking at the rippling river flowing leisurely.At this time, Professor Pan discussed the truth of the incident with the police. "This is my guess based on the situation. Judging the case based on common sense and observation will not be too far apart. Before the case is made public, whether I can ask someone to salvage the river? Although I have a very good reasoning, but If there is no evidence, no one is willing to bow their heads and plead guilty, and my reasoning is nothing more than a hypothesis."

Who is the murderer who killed Yan Qinxue?What about Professor Pan's ingenious reasoning?

[Answer] Afterwards, I finally found this telescope at the bottom of the river. It is a telescope with a length of only 40 centimeters.The small package that Yan Qinxue's younger brother sent must be this telescope!But how could this telescope have something to do with the murder case?
Professor Pan looked at the telescope carefully, and said after a while: "My guess is correct. This telescope can be disassembled at any time. Yan Qinxue's younger brother put a fine poisonous needle in the lens barrel of this telescope. When Yan Qinxue put the telescope on the glasses and turned the screw in the center of the lens barrel by hand to adjust the focus of the lens, the fine poisonous needle hidden in the lens barrel jumped out due to the rebound force of the spring, and happened to penetrate into Yan Qinxue's In the right eye, Yan Qinxue panicked and threw the binoculars out of his hand. The binoculars fell into the river below the tower just like that. Although Yan Qinxue pulled out the poisonous needle in the eye in time, it made him fall even faster. death."

(End of this chapter)