Based on the footprints left at the scene, the police can determine the location of the suspect entering and leaving the nursing home, but these are all internal police information and outsiders are not allowed to know.

Therefore, since the patient named Liu Cheng was able to tell the exact location, it means that it is very likely that he really saw the suspect that night.

It's a pity that Liu Cheng is a mentally ill person, and if he found out that the suspect was following the female employee into the toilet, he only needed to shout loudly to save the female employee's life.

However, Liu Cheng has an abnormal mental disorder, has a serious communication disorder, and is silent and rarely speaks on weekdays, otherwise, he would not have been sent to a nursing home by his family from a very young age.

However, no matter what, Liu Cheng is still an important witness to the case, and the police immediately sent the best psychological experts to communicate with him, and finally obtained a relatively complete confession and a portrait of the suspect!

However, despite this portrait, the suspect is still like a stone in the sea, although the police have never given up the investigation, but in the end they have not found the real culprit.

Now, when Wang Can found out that this case was the case in "Memoirs of Murder", he immediately took the police information of that year and began to compare.

First of all, the shoe prints of that year, the technician confirmed that it was a pair of common cloth shoes of size 42, and the height of the murderer should be about 1.72 meters.

Nong Zhifa's height is 1.73 meters, and he happens to wear size 42 shoes.

Subsequently, Wang Can compared the wanted portrait of the suspect with Nong Zhifa, but the comparison result was a little unexpected.

According to the comparison of experts, it is proved that the similarity between Nong Zhifa himself and the wanted portrait is only 61%, and this proportion does not meet the standard of echoing at all.

However, such a ratio also cannot completely rule out the suspicion of Nong Zhifa.

Because, after all, it was drawn through the oral accounts of eyewitnesses, and it is normal for there to be some deviations.

However, now that there is Nong Zhifa's "Memoirs of Murder", the situation is obviously different.

Zhao Yu thought that as long as he took the photo sent by Nong Zhi and asked Liu Cheng again, the answer would be clear.

It's a pity that although Liu Cheng is still in the world, his condition has already deteriorated seriously.

Now he lives in Chaohai Sheng'an Psychological Hospital, and in addition to eating, drinking, and Lazar every day, he goes to the park of the sanatorium, and stares at the flowers in the park in a daze, and stays all day.

Sometimes, even when it is cloudy and rainy, he will go out with an umbrella, and his behavior is quite unusual.

Before, Wang Can had already sent someone to visit him with the photo sent by Nong Zhi, but Liu Cheng didn't say a word, as if he had completely lost his ability to communicate.

According to the hospital nurse, Liu Cheng is not unable to speak, but he is unable to communicate with people normally and has fallen into a self-enclosed world.

As a result, the police officers had no choice but to return in vain.

If you can't get Liu Cheng's confession, you can't determine whether the real culprit in this case is Nong Zhifa himself?

Therefore, Zhao Yu felt that it was necessary for him to work this Liu Cheng to see if he could provide new clues for this case?

So, he pretended to be a mentally ill person and was admitted to a psychiatric hospital, trying to approach Liu Cheng as a patient and probe his tone.

Speaking of which, this kind of task is quite strange.

If he is a prisoner, Zhao Yu has the means to make him speak, but in the face of a mentally ill person, he doesn't know how to start?

Since entering the mental hospital, Zhao Yu has been trying to get close to Liu Cheng all the time, but as the information shows, Liu Cheng is like just air for Zhao Yu, completely ignoring.

Even if Zhao Yu asked him to take the initiative to take the initiative, he didn't realize it and didn't react.

It stands to reason that when ordinary people see this situation, they can only think of other ways.

But Zhao Yu is different, he is a person who does not give up until he reaches his goal, and when he sees Liu Cheng squatting in the garden every day to look at the flowers, it is a day at a glance.

He simply stayed in the garden every day, learned from Liu Cheng's appearance, and stared at the flowers every day. Even if it rains on a cloudy day, he doesn't miss it, as long as Liu Cheng looks at the flowers, he also looks at the flowers.

He wondered, as long as he imitated Liu Cheng, he could find a common language and let Liu Cheng speak?

One, two, three......

After a few days, Zhao Yu felt that he was a little nervous, but for Liu Cheng, he still ignored Zhao Yu as if he were air......

In this way, Zhao Yu stayed in a psychiatric hospital for 9 days, and until today, he still has nothing to gain.

"If you want me to say," Miao Ying said from the phone, "If you feel too tired from work, I have no opinion on recuperating from a mental hospital!"

"However, if you want to investigate the case, I feel that you are a bit of a waste of time!" Miao Ying said calmly, "I know, you are dealing with mental patients so hard, just to prove that Nong Zhifa is not the original author of the murder memoir, and there is someone else about the murderer, right?"

"This ......" Zhao Yu nodded after smacking his lips, "I just think that Nong Zhifa is very similar to the previous Kang Ziqing, his personality does not match, and his trajectory does not match, I think that even if he is the murderer, then it is very likely that there is still a party in this case!"

"Meow, although Nong Zhifa is dead, if there are still comrades in this case, the nature of this case will be different!

"Now a large part of the corpses cannot be found, and a large part of the cases cannot be proven, if there are really comrades, then we can avenge the deceased!"

"I understand, I understand!" Miao Ying said, "but...... What can a mentally ill person prove? His testimony and confession are legally invalid.

"Even if the last patient speaks and tells you that what he saw back then was Nong Zhifa, it is equivalent to doing useless work?"

"What if...... Isn't it?" Zhao Yu was not convinced.

"If not," Miao Ying said, "do you believe it?"

"This ......" Zhao Yu frowned, Miao Ying's words were indeed very reasonable, perhaps, he was really wasting time. However, Zhao Yu had a kind of stubbornness in his bones, and he still gritted his teeth and said, "Meow, I think, maybe the confession of a mentally ill person will be more true than that of a normal person?"

"Because, they won't lie, at least?

"Besides...... I don't need him to testify in court, I just ask about the situation! "And ah......" Zhao Yu said again, "You don't know, I don't think I have wasted these 9 days, when I looked at the flowers with him today, he secretly looked at me a total of 12 times, which is much more than before!"

"I think I've got his attention, and if I hold on for a few more days, he'll definitely think of me as his friend!"

"I'm really convinced of you!" Miao Ying was speechless and admonished, "Okay, I respect your choice, who made you the great detective?"

"However, I can remind you, you must not go crazy when you investigate the case...... Don't forget that you're not mentally ill, you used to be mentally abnormal, so I'm afraid you'll ......"

"Okay, okay," Zhao Yuzuo said, "Let's stay in the mouth, Miss, I didn't think about this, don't induce me......"

After that, the two exchanged a few more intimate words, and then hung up the phone.

At this time, the news on TV had been broadcast, Zhao Yu no longer had the intention of eating chicken, and began to think about Miao Ying's words, was he really doing useless work?

It's a bit whimsical to want to get close to a mentally ill person!

Hehe......

Zhao Yu scratched his head, and began to wonder in his heart, is it that after today, he will end this ridiculous behavior?