Luo Feng agreed with Lang Xingtian's analysis and felt that Lang Xingtian's inference was also very reasonable.

"If I'm not mistaken, Lin Jun should have been forced to come to this laboratory, the murderer kidnapped Lin Jun, and forcibly took Lin Jun to this laboratory at night." Lang Xingtian continued.

"Team Lang, how do you know that Lin Jun was kidnapped, not an accomplice with the other party, and finally had an infighting and was killed by the murderer?" A police officer asked his own question.

"Because there was only one shoe of the deceased at the scene, but the shoe on the other foot was missing, and the sock on the deceased's unshoed foot was still stained with mud from the school, and there were traces of people climbing in and out of the windowsill. From this, it can be inferred that the deceased was forcibly brought over by the murderer, otherwise he would not have been so busy that he would not have had time to wear the shoes on his feet. Lang Xingtian said his speculation.

"But Team Lang, I don't understand a little, why did the murderer have to arrest the deceased in this place?" Luo Feng asked suspiciously.

"Because here's what the killer wants." Lang Xingtian said affirmatively.

"What's that?" Luo Feng was confused.

"The formulation and production process of new drugs, as well as the finished drugs." Lang Xingtian said.

"Team Lang, you're saying that this lab is where new drugs are made?" Luo Feng was shocked.

"In fact, none of us thought that a new type of drug with such a strong toxicity would be made in this dilapidated laboratory, and the person who made the drugs was not an organization, just a chemistry teacher, if it wasn't for seeing some drug-making things in the laboratory, I wouldn't have thought of it." Lang Xingtian felt very incredible.

"There is another thing that makes me more sure that this place is a new type of drug production, and that is the bags in the trash can." Lang Xingtian took out a few bags from the trash can.

"Be careful in doing things in the future, everyone is familiar with these bags, that's right, these bags are exactly the same as the bags in Jiang Ping's house, and even the date and handwriting on them are exactly the same." Lang Xingtian picked up the bag and showed it to everyone.

All the police officers admired Lang Xingtian's investigative ability.

"You noticed that there is no date on the bag, and the date found by Jiang Ping is compared with the date on the bag in his hand now, we can see that there is a period of time missing, and this period of time is when Lin Jun disappeared and Jiang Ping died of drug addiction. But the scene was not found, so I speculated that the missing bags of drugs should have been taken by the murderer.

When Luo Feng heard Lang Xingtian's analysis, he suddenly realized in his heart that everything was integrated. can achieve the position of the captain of the criminal police team, Luo Feng naturally has some ability.

"Team Lang, it seems that the other party has already gotten what he wants, otherwise he wouldn't have killed Lin Jun." Luo Feng had worry on his face.

"That's right, the other party has got what they wanted." Xingtian found some dust on the ground, opened a book on the table, and saw a broken page in it, this page had been torn off, leaving only shredded paper, and then Xingtian used a small pinch of dust to gently smear it on the next page, and some vague boys appeared soon.

"What is this?" Luo Feng was very curious.

"This should be the formula for the new drug formula that the murderer coerced Lin Jun to write down, no wonder Lin Jun's right hand is intact, it turned out to be to write the formula." It was only at this time that Lang Xingtian solved his previous doubts.

"Take this piece of paper and check it, be sure to restore the handwriting on it, and also look for such a person," Lang Xingtian handed the information to a police officer next to him who was collecting information.

"The murderer should be between 1.7 and 1.8 meters tall, good at left-handed, strong body, this person is very dangerous, once you meet a person, you must report it immediately, don't act rashly." Xingtian thought for a moment and said.

"Team Lang, how do you know that the murderer is between 1.7 and 1.8 meters tall and is good at his left hand?" Luo Feng asked suspiciously.

"Seeing that there is no scar on the deceased's neck, the handprint and tiger's mouth are tilted down forty-five degrees, just like we usually hold our neck, so the height of the murderer and the deceased should be about the same, and the deceased is only about one meter seventy-five, so the murderer should also be about this height. The handprint on the neck of the deceased is obviously the left hand, and ordinary people are used to using their right hand no matter what they do, and the murderer kills with his left hand, which shows that he is good at the left hand, and he can pinch off a person's neck with a single hand, indicating that the murderer is very strong. Lang Xingtian explained.

The police officers present suddenly became enlightened.

"The case is really getting more and more complicated, but there is only such a little clue about the perpetrator's information." Lang Xingtian was very entangled and depressed in his heart.

In the end, Lang Xingtian did not find any useful clues at the scene.

"Team Lang, Lin Jun's information has been checked, I didn't expect this guy's experience to be quite exciting, this guy is also a genius, a genius in chemistry, originally a teacher in a famous university in the north, but this guy has a bad heart, hooked up with a female student in the school, and wanted to wipe his mouth and not admit it after eating, and the female student is not a fuel-efficient lamp, so he went directly to the school. As a result, this guy was directly expelled from the school, and later went to this junior college in Mingyue City to continue to be a teacher. But he didn't change his stubbornness, and he still had an affair with the students and teachers in the school, if it weren't for the fact that he really had some talent, the school would have expelled him a long time ago. A police officer put Lin Jun's latest information in front of Lang Xingtian.

"Is that much information?" Xingtian asked with a frown.

"Yes, that's all we can collect so far," the officer said helplessly.

"Is there any contradiction between Lin Jun and Jiang Ping?" Xingtian suddenly asked.

"The people in the school have not reacted, Jiang Ping is usually taciturn and rarely socializes with others, but Lin Jun is different, this person is long-sleeved and good at dancing, and he is a delicate person, and because of this, he has done many dirty things in the school, and he still has not been expelled. So these two people basically have little to do with each other. The officer said.

"It's strange that two people from different worlds and different personalities have met frequently for more than a month, what is the reason? Is there any other information just to meet and exchange drugs? Xingtian thought and said.

"We were puzzled by this, but we didn't find out why. The officer said.

"Don't worry, it's the fox that will always show its tail, as long as you catch this murderer, everything will be solved." Lang Xingtian said comfortingly.

"Team Lang, our police officers have been investigating for a day, because they are afraid of the impact, so the investigation is carried out secretly, the effect is not very large, and there is no information." Instructor Li Ming walked into Lang Xingtian's office at this time and said bitterly.

"There is no way to do this, the matter must not be spread for the time being, so as not to cause unnecessary panic, now it is also a test for us, let the brothers work hard, if this case is solved, the Tianxiang Dynasty Club, I will treat you." Xingtian promised.

"Good Lang team, what you say counts, I can't forget the dishes of the Tianxiang Dynasty, and the brothers are blessed and more motivated," instructor Li Ming said with great joy.

"No problem, I can still afford this meal." Lang Xingtian said briskly.