If the killer was colorblind, then there is a reasonable explanation for his actions.

The Qian Ling sand is sparse and easy to dry, and when it hits the ground, the murderer can still dig bricks to eliminate traces, but the Qian Ling sand on the wall has dried up and stuck to the dark green brick wall.

In the same way, the murderer repainted the windowsill with red instead of green, because the light green is grayish cyan in the eyes of the color blind, while the dark green and red are both dark brown, and the murderer could not distinguish red and green in the dark night, so he chose one at random and repainted it.

Two things can be extrapolated from this.

First, the murderer did not know or knew little about his color blindness; Second, the murderer's mother and grandfather must be colorblind.

In his previous life, due to the need to investigate the case, Fu Jun had systematically learned about color blindness, which is a genetic disease, and the table xiàn is the cross-inheritance of members of the same lineage, that is, the grandfather passed it on to the mother, the mother passed it on to the son, the son passed it on to the granddaughter, and so on. Men are more likely to get the disease than women.

The more Fu Jun thought about it, the more excited he felt.

This discovery is so important that if it is used as a basis, it can greatly narrow down the scope of the investigation and identify the killer.

Thinking like this, she opened her mouth and said, "This murderer"

However, as Fang said these words, her mind suddenly raced, and she suddenly stopped talking.

How should she explain color blindness to Tang Jun

Color blindness was not recorded in the Han Dynasty.

At this time, if Fu Jun identified the murderer as a colorblind patient, she must first explain the cause of the disease, and then explain the reason why she knows the cause.

She is a noble girl raised in the depths of the boudoir, how can she know about color blindness out of thin air, besides, this occasion for speaking is not appropriate, who can guarantee that there is no ear in the wall here

Such an important clue made their investigation ahead of the murderer for the first time, and if the news accidentally leaked out, it would be more difficult to investigate in the future.

In addition, she has a vague worry that the previous Grange Three Corpses Case and Qian Lingsha made her always feel that the Joint Investigation Department is likely not to be monolithic, and since the murderer can intercept and kill the officials of the Joint Investigation Division, he may not be unaware of the investigation process of the Three Corpses Case of the Joint Investigation Division.

Thinking like this, Fu Jun immediately extinguished the idea of telling the truth.

She paused slightly, and when she spoke again, the words she said turned in a different direction: "If the murderer has no martial arts, can he also do this case" She turned to Meng Yuan and asked.

It was also a question she wanted to know.

Meng Yuan pondered for a moment and said, "Yes." As long as there is the drug of the Tibetan Sword Villa, it is not difficult to do anything. After a pause, he added, "But the murderer must be powerful." ”

Fu Jun nodded, and then said another thought that had been in his heart for a long time: "I think that the murderer is likely to have come to He Gu's house. ”

"Why do you say that," Tang Jun asked.

Fu Jun said: "This is actually my speculation, and it is divided into three points to explain. First, about the murderer. This person is shrewd and cunning, his modus operandi is hidden, and there is no mistake in killing, which shows that he has made sufficient preparations in advance, that is, he must step on some practical candidates in advance, and choose the right time and place in order to be foolproof when committing the crime. Second, about the dead. The vast majority of the deceased in the three corpses case were civilians, and their residences were also in a mixed city, as can be seen from the Dagongfang case, the Huaiqing case, and the Hunan case. Even if there are living people in these places, they will not attract the attention of others, and the murderer takes advantage of this to mingle with the idle people and hide his own traces. ”

Speaking of this, Fu Jun paused for a moment and said, "Now I have to talk about the third point, that is, the case of this case and the case of Grange. In these two cases, the deceased and the murderer usually committed crimes are very different. The case of the Grange will not be mentioned for the time being, but only the present case. Changle Fang is not comparable to the Great Gong Fang, if there are living people snooping here, it will definitely attract the attention of the surrounding people. However, the FBI did not know any clues about this, which shows that the murderer did not step on the spot beforehand. ”

Tang Jun nodded when he heard this. He already knew a little bit what Fu Jun was going to say, so he continued: "As Cousin Jun said. Since the murderer did not step on the spot in advance, where did he learn that He Gu's wife was pregnant? Secondly, the murderer came and went freely, and there was no trace of prying at the door, so it can be seen that the murderer knew the layout of this hospital well, from these two points, it can be seen that the murderer is likely to be familiar with He Gu and has been here, so no one will suspect him when he appears in the area of Changle Fang. ”

"Exactly." Fu Jun smiled lightly, then turned to Meng Yuan and said, "Let's talk about the Grange case again." The officer of the Joint Investigation Department carried a secret letter, but the letter was lost, and both husband and wife died. I always feel that there seems to be a hidden line between the Grange case and the He Gu case. The murderer's reason for committing the crime was not simply to kill, but for another purpose. Let's speculate that the murderer killed the officials of the Joint Investigation Department in order to have a secret letter in his hand; So, will the murderer kill He Gu because he has something in his hand?"

As soon as Fu Jun's voice fell, Meng Yuan said in a deep voice: "He Gu's details have been clarified, he is an ordinary official, and the only important thing about him is his position. ”

Meng Yuan is familiar with He Jingbian, and the Fifth Military Battalion also has a close relationship with the Joint Investigation Department, and the information in his hands is much more detailed than Tang Junke.

"He Gu is in charge of several major grain depots, could it be someone who wants to hit the grain depots" Fu Jun put forward another hypothesis, and his tone was uncertain.

Meng Yuan shook his head and did not speak.

This possibility has also been considered by the Joint Investigation Division, but they have carefully checked the warehouses, but there is nothing unusual, and He Gu's successor, the Joint Investigation Division, will carefully select them, and it is impossible for suspicious people to mix in.

Fu Jun thought about it, and still felt that the death of the He couple must have a reason, otherwise the murderer would not have to take the risk, so she said: "He Gu is in an important position, if he dies, it will attract the attention of all parties, and the murderer must have a reason to kill him if he is willing to take the risk to kill him." If He Gu himself behaved uprightly, could it be because he said or did something before he died, which endangered the murderer, and the murderer killed him?"

As soon as these words came out, Meng Yuan raised his eyebrows, and Tang Jun suddenly straightened his back.

Almost at the same time, they all remembered something.

"Could it be" Tang Jun hesitated and opened his mouth, and Meng Yuan immediately said: "Check the warehouse"

The two of them glanced at each other, and their hearts were shocked.

In May, He Gu asked for an inspection of the warehouse. The so-called inspection of the warehouse is to move out the bags of grain in the warehouse one by one, open the grain bags and check them one by one.

This is a huge project, extremely labor-intensive, but also need to cooperate with the forbidden army, since the Han Dynasty Emperor Taizu to the present, the total has also been inspected five times. As soon as He Gu's fold was handed over, even though it was shelved by the cabinet, it was not dismissed, and now that the other person is dead, this fold will naturally be invalidated.

The Joint Investigation Department of this matter was collected as background information, and did not start from here when investigating the case, and now Fu Jun has brought out the Grange case and this case together, which highlights the strangeness of this matter.

In May, he submitted a warehouse inspection and died at home in June. Among them, there is really something to do with it