Chen Nan's guess was actually not without reason.

In fact, as early as a few years ago, there was a very famous person called Heart Painter Liu Feng.

It is said that it is difficult to draw mountains when they are high, difficult to draw treetops when painting trees, difficult to draw bones when painting portraits of people, and it is difficult to know people’s faces but not their hearts.

So painting the heart is a portrait of criminal psychology.

Based on clues, make some rough guesses about the suspect.

The reason why heart painter Liu Feng is famous and even appeared on CCTV is because he made a series of guesses about criminal suspects based on some clues.

The most famous one was during a diagnosis. He said that the patient had strong sexual desire, lived by the water, and there was a bridge by the water. The patient had an iron injury on his ankle, which may have damaged the Sanyinjiao. The three vaginal meridians in the human body meet at the human body.

The Sanyinjiao on the right leg is the most yin point of a person. Damage here will damage the yin energy...

Of course, some of these inferences will inevitably sound very fantasy, but it is undeniable that the inference of criminal suspects based on known clues still needs to be developed.

Chen Nan just made a guess based on existing clues.

Judging a case is like making a diagnosis. It requires peeling off the cocoons, looking, hearing, asking, and analyzing known clues to draw a conclusion.

There is generally no DNA in urine, unless you encounter urinary tract metabolism or kidney cells, or the murderer himself has urinary tract disease, and you can get some clues.

Obviously, there is no murderer!

Otherwise, modern instruments would not be able to detect it.

The reason why Chen Nan speculated that the patient was incompetent was because of some clues.

First, the victim's vagina is obviously damaged.

The second reason is that the murderer's urine smelled fishy, ​​and there was yellow sweat on his underwear, which also smelled fishy.

Analyzed from the perspective of traditional Chinese medicine.

The smell of urine is not easy to produce fishy smell in such a cold winter season. The main reason may be the condition of the murderer himself.

According to traditional Chinese medicine, urine is a turbid liquid after the metabolism of water in the human body.

The smell of normal urine should come from the volatile acids in the urine. If the urine is left for a long time, the smell of ammonia may appear due to the decomposition of urea. Under pathological conditions, the smell of fresh urine may appear fishy, ​​pungent, or foul.

Even the smell of rotten apples is pathological.

However, in cold weather, urea obviously decomposes very slowly and does not cause a serious fishy odor.

According to traditional Chinese medicine, the smell of murder is mostly caused by weak kidney qi and loss of bladder qi.

It is mostly caused by insufficient physical endowment, overwork, old age and infirmity, and insufficient kidney yang to transform qi.

Secondly

Although the murderer's method was ruthless, he used a hammer to severely injure his head and hit a fixed position multiple times. The key is... the accuracy of the other party is very unusual. Under normal circumstances, without professional training or relevant work experience, it is very difficult.

Such operations are rare.

Also, the patient's underwear is in pieces and is not caused by not cleaning it for a long time. There is only one reason for this, and that is physical weakness, and it is not caused randomly.

It is recorded in "Synopsis of the Golden Chamber" that the sweat stains the clothes and the color is like cypress juice. The main cause of the disease is the combination of wind, fire, dampness and heat.

The patient's long-term depletion of true yin leads to an imbalance of yin and yang.

People with insufficient kidney yin and excessive yin and fire tend to be restless in their hearts, like to watch inappropriate web videos in the browser, or have desires in their hearts.

However, due to insufficient yang energy, the yin fluid is depleted over time, resulting in desire, but inability. It can only be carried out in a violent way.

This is the reason why murderers like to target beautiful women.

At the same time, the reason why yellow sweat is obvious in the twelfth lunar month of winter must be caused by wind, fire and heat poisons, and...the patient's Yin fluid is depleted, which also needs a reason.

You may be in a hot environment for a long time.

Chen Nan actually guessed it was a boiler room at first, but then he thought about his age...it didn't look like a boiler room. Not far from the park, there was a steel factory.

Case techniques...

Only then did Chen Nan come up with such a conjecture. As for age...

Chen Nan also guessed it through urine. Some very good masters of traditional Chinese medicine can get the patient's information through some clues.

Urine is also a very normal thing.

It can be done through the analysis of color and some taste.

Chen Nan checked the relevant information and learned the reason.

In a study he published in the American journal "Frontiers of Aging Neuroscience", researchers identified a natural chemical in urine that increases in concentration as we age, truly reflecting aging.

Biomarkers of speed.

However, current forensic investigation clues obviously lag behind conventional medicine.

At this time, Shang Chaoyan couldn't help but ask:

"How did you guess?"

"The veteran detectives and criminal experts who investigated the case speculated that the patient was around 40 years old."

Chen Nan smiled and said, "This is a unique skill of Chinese medicine."

"but……"

"You can go back and measure an indicator. The name of this chemical is 8-oxo-7,8-dihydroguanosine, or 8-oxoGsn for short. It is a by-product of slow, long-term damage to RNA."

"This substance changes with age."

"And 8-oxoGsn is such a marker. It is a well-known by-product of the oxidation of guanine (one of the four base pairs found in DNA and RNA). Experienced Chinese medicine can judge it by its color."

"As for why he works in a steel factory, except that murderers usually choose to commit crimes in positions where they are good at committing crimes."

"Another reason is the patient's constitution."

"The patient's constitution is caused by weak kidney qi and loss of bladder qi. This is accompanied by the invasion of wind, fire and heat poisons, resulting in fishy urine."

"Also, do you think a normal murderer would choose to urinate in the other person's head when he commits a crime?" "This just means that the other person's bladder has lost its gasification, resulting in excessive urination, frequent urination, urgent urination, and inability to urinate completely."

"You can check and analyze the trace samples of urine outside the other party's head."

Having said this, Chen Nan smiled slightly at Shang Chaoyan, "But..."

"This knowledge is just my guess as a layman."

"For reference only."

"I hope this helps you."

"After all, I don't want to see the murderer go free."

After finishing speaking, Chen Nan shook the car key and said to Shang Chaoyan:

"By the way, thank you for washing my car."

After saying that, Chen Nan turned around and left.

And this time...

Shang Chaoyan stood there and pondered for a long time. What Chen Nan said was quite shocking.

After thinking about it, Shang Chaoyan said directly to Chen Nan, "Give me the key."

"I have something to do"

After saying that, she grabbed Chen Nan's keys, hurriedly got in the car, and rushed towards the Yuancheng City Public Security Bureau. Chen Nan was stunned on the spot.

Damn...

"Can't you just make a phone call?"

Chen Nan was speechless and said "Come on" to Shang Chaoyan.

Shang Chaoyan turned around and nodded, clenching his fist at Chen Nan and saying, "Come on." Chen Nan was dumbfounded.

Add your sister’s oil!

I said fill up the gas. Gas is very expensive!

Chen Nan was speechless...

Watching the car step on the accelerator and drive away, Chen Nan shook his head helplessly.

This fool...

Still like this.

Chen Nan shook his head and returned home.

But...he was thinking about a question. After Shang Chaoyan left, would he be scolded? After all...the guess given by a traditional Chinese medicine doctor could be counted.

That night, as expected...

After Yan came back from Shang Dynasty, how many

It was a bit disappointing. After returning the key to Chen Nan, he kept muttering:

"I think your analysis makes sense."
To be continued...