Wan Jiangchi stood in the morgue of the forensic medical examiner's room, looking at the dark brown and light brown leather-like ditches on the left and right of Cao A's big neck, and was speechless.

He thought he had examined it very carefully, but he didn't expect to ignore the past in such an obvious detail.

It shouldn't be, it shouldn't be!

Not to mention that he is a forensic doctor with a modern Western laboratory education, and he is an old-fashioned Chinese post-mortem worker, I'm afraid he will also notice this detail, right?

Lin Jiangbei didn't care what Wan Jiangchi thought, walked out of the morgue, and said to Zhou Fengshan, who led everyone to wait outside: "Principal Zhou, I have re-examined the body, and there is no more to find except that it can be confirmed that the murderer is left-handed. I now want to check the scene of the crime again. ”

For Lin Jiangbei's request, Zhou Fengshan naturally agreed, and immediately asked the driver to drive his Buick special car over, and together with Du Chenghu, he accompanied Lin Jiangbei to the Cao family ancestral hall.

As for the others, under the leadership of Wang Jiangang, they boarded an American-style truck and followed the Buick sedan.

The Cao Family Ancestral Hall is located in Hengtaohua Lane, Yongjin Road, from the provincial capital police station in Taipingfang, which is 20 minutes away. It's just that Heng Taohua Lane is relatively narrow, Zhou Fengshan's Buick sedan can drive straight in, and the American-style truck that Wang Jiangang and others are riding can only stop at the entrance of the alley, and more than a dozen people jump off the carriage and run wildly all the way, but they did not arrive at the Cao family ancestral hall a few minutes later than Zhou Fengshan's Buick car.

There are several policemen on guard outside the Cao family ancestral hall.

Seeing Zhou Fengshan get down from the Buick car, the policeman led by him hurriedly went up and stood upright, "Bureau, Yang Dake, director of the Henghe Bridge Branch of the Second Sub-Bureau, is ordered to report to you!" ”

Zhou Fengshan nodded with a grim face, "In the past three days, have there been idle people waiting to enter the ancestral hall?" ”

"Report to the bureau, strictly implement the warning order of Captain Wang of the provincial bureau, without Captain Wang's warrant, even Deputy Director Cao's family is not allowed to enter the ancestral hall!" Yang Dake replied loudly.

"Good!" Zhou Fengshan nodded, and asked again, "Who is Cao Shangen?" ”

"Report to the bureau," a middle-aged policeman with red and swollen eyes behind Yang Dake stood up, "The lowly position is Cao Shangen." ”

"Yamane, the festival mourns and changes!" Zhou Fengshan stretched out his hand and patted Cao Shangen's shoulder heavily, "I have always attached great importance to Ling Zun's case. It's not ......."

While speaking, Zhou Fengshan pointed at Lin Jiangbei who was standing behind him with his finger, "This is Lin Jiangbei, a well-known case-solving expert from the Central Police Research Institute, this time in order to solve the case of Ling Zun's murder, I specially invited him out of the mountain to serve as a case-handling consultant!" ”

Cao Shangen stepped forward and bowed heavily to Lin Jiangbei, and said in a hoarse voice: "Consultant Lin, please take a lot of trouble, you must catch my father's murderer for Lao Cao!" ”

"Uncle Yamane, don't worry, I will definitely do my best!" Lin Jiangbei hurriedly supported Cao Shangen with his hand, "Wait a minute, I have to ask Uncle Shangen to accompany me to investigate the scene of the crime, there may be some questions that you need to answer at that time." ”

Speaking of this, Lin Jiangbei turned to look at Zhou Fengshan, "Principal Zhou, you don't need too many people to investigate the scene of the crime. I think you, the chief inspector, Captain Wang, Cao Shangen, and the police officers from the physical evidence room of the third section can go in with me! ”

The few veterans in the case-handling team couldn't help but change their faces, they never thought that Lin Jiangbei would leave them outside and not let them follow up with the ancestral hall at all.

It's too rampant, isn't it?

Isn't this a clear disdain for them?

As soon as they wanted to raise a different opinion, they saw Zhou Fengshan's sharp gaze sweeping over, obviously warning them not to do much.

At this time, I only heard Du Chenghu smile and said, "Jiangbei, let the bureau seat and Captain Wang accompany you in." I'm a layman at solving crimes, so I won't go in and join in the fun.

No matter how unwilling those veteran case-solving players were, they could only swallow the words into their stomachs.

Even Du Chenghu, the chief inspector, is willing to wait outside, what qualifications do they have to make trouble? I could only watch Lin Jiangbei lead a few people into the Cao family ancestral hall.

The ancestral hall of the Cao family sits in the north and faces south, and the area is not large, about half an acre in size.

The entrance door is a patio of fifty or sixty square meters, and the east and west wings are on the left and right of the patio. According to Cao Shangen, the west wing is usually used to stack sundries, while his father lives in the east wing.

Directly north of the patio is the main hall of the ancestral hall, and the more than a dozen ancestral tablets and sterling silver incense burners stolen from the Cao family ancestral hall are placed in the main hall, and Cao Adaa was also killed by the murderer before the incense case in the main hall.

Lin Jiangbei carefully inspected the main hall and the east and west wings, but he was disappointed that he didn't find any valuable clues.

Then Lin Jiangbei paid attention to the patio and carefully investigated.

Suddenly, Lin Jiangbei stopped at the drainage ditch in the southeast corner of the patio, and then slowly squatted down, pressed the edge of the drainage ditch with both hands, and carefully observed below.

"What, Jiangbei, but what did you find?" Zhou Fengshan hurriedly took Wang Jiangang to come up.

"Well, there's some discovery, here's a couple of cigarette butts." Lin Jiangbei pointed to a few cigarette butts in the corner of the drainage ditch with his gloved fingers.

"Oh?" Zhou Fengshan stretched out his head to look inside, and sure enough, there were five cigarette butts of different lengths scattered inside.

"Uncle Shangen," Lin Jiangbei beckoned Cao Shangen over, and pointed to the cigarette butts in the drainage ditch, "Are these cigarette butts left by your father?" ”

Cao Shangen glanced into the gutter, shook his head and said, "No, my father never smokes!" ”

Lin Jiangbei nodded, and sure enough, it was the same as he guessed. Even if Cao Ada's cigarette butts were smoking, these cigarette butts could not have been left by Cao Ada's alone, because there were three varieties of these five cigarette butts. Since Cao Shangen said that Cao Ada's cigarette doesn't smoke, it is even more unlikely that these cigarette butts were left by Cao Ada.

"Then your father usually cleans the ancestral hall once a few days?" Lin Jiangbei asked again.

"My father would clean the ancestral hall every day." Cao Shangen replied.

Lin Jiangbei nodded again, just now when he was inspecting the main hall and the east and west wings, he found that although Cao Adaa had been killed for three days, there was still no dust in the wings and the main hall, which proved that Cao Shangen was not exaggerating on this issue.

"Then will your father only plan to have a wing room in the main hall and not pay much attention to the patio?" Lin Jiangbei asked.

"Absolutely not, every time my father cleans, he cleans everything inside and out!"

In order to verify his statement, Cao Shangen reached out and touched the stone pier that supported the patio pillars, and then stretched out his palm in front of Lin Jiangbei for him to watch.

"Look at the stone pier of the wooden pillar, my father has to carefully wipe it every day!"

"In other words, even the gutter in the patio, your father carefully cleans it every day?" Lin Jiangbei asked again.

"Yes, he cleans carefully every day."

"And what time does he clean it every day?"

"The time was after dinner. He cleaned the ancestral hall every day before going to bed. Cao Shangen replied, "In this way, we can ensure that when the door opens early the next morning, the ancestral hall will be refreshing." ”

"In other words, these cigarette butts could only have been left on or after the night of your father's murder, and could not have been earlier." Lin Jiangbei looked at Cao Shangen

Cao Shangen thought for a while, nodded and said, "Yes, that's right. ”

Zhou Fengshan also understood at this time, and he looked at Lin Jiangbei in surprise, "Jiangbei, do you mean that these cigarette butts may have been left by the murderer?" ”