"That's right! I've thought about this question too. Zhao Zimeng said.

"Yes! The water level in the center of the river is indeed very deep, you see-" Xiao Lao pointed to several boats on the river.

There are three boats moving forward on the river, one boat is a motor boat - to the east, the power is a diesel engine, three people can hear the roar of the diesel engine, this motor boat walks in the center of the river, and the two boats are small wooden boats - one in front of the other and one behind, heading west, these two wooden boats are walking along the river - only five or six meters away from the river bank, and the power of the two wooden boats comes from the boat penny in the hands of the boatman.

"Xiao Lao, I understand, you want to say that the murderer used a small wooden boat, and if you walk from the center of the river, the general boat penny will not reach the bottom of the river."

"Yes, that's one reason, and one important one. The time of the crime was at the end of April, when the water level of the Qinnan River began to rise and the water flow rate was relatively large, for the sake of safety, the murderer's boat must walk close to the river bank, stick to the river bank - if the murderer is a new hand who is not good at supporting the boat - it will also walk close to the river bank, and it will be easy to be discovered, especially at the ferry, if there are people at the ferry, the boat will definitely be seen. As a thief, the murderer will definitely try his best to avoid being seen. ”

Zhao Zimeng had to admire Xiao Lao's analysis, although he was a forensic doctor, but he had been exposed to countless cases in his life, he was well-informed, Director Wang asked Xiao Lao to assist Zhao Zimeng's work, in addition to the advantages of forensic science, more important is Xiao Lao's criminal investigation experience accumulated over the years.

From the police station to Liuyedu, it took everyone about 20 minutes. When he walked to the octagonal grass pavilion, the boat boss was about to collect the gangplank.

"Liu Laosi, wait for us." Liu Daqiang shouted at the dock.

Liu Laosi is the boss of the boat, his age is about fifty years old, he is not tall, about one meter six or five, but his body is very strong, which can be seen from the muscles on his exposed arms and legs.

Liu Laosi put down the springboard and straightened his waist: "Liu Gong'an, don't worry, slow down, I'll wait for you." ”

There were more than a dozen people on the ferry.

The wharf is several stone steps, the gangplank is on the bow of the boat at one end, and the other is on the last stone step, the gangplank is about 1.5 meters long and about 40 centimeters wide, the two ends of the gangplank are tied with wires, and some long iron nails are nailed on the gangplank (which is used to prevent slipping).

Liu Laosi helped the three people to the boat one by one, then put away the gangplank, pulled up the boat penny inserted in the outer string of the ferry, and knocked on the stone steps, and the boat left the riverbank.

Someone on the boat recognized Liu Daqiang and gave up a few seats for three people to sit on.

On each side of the ship, there is an inner side 30 centimeters wide.

"Liu Gong'an, where are you going?" Liu Laosi was holding the boat and talking to Liu Daqiang. The penny in his hand was seven or eight meters long, and as the ferry moved forward, the waterline of the penny kept moving up. When the boat reached the middle of the river, the part of the seven or eight meters long penny on the water was only about one meter left, and when it reached the middle of the river, Liu Laosi's body was almost attached to the deck of the boat.

"Let's go to Kagami." Liu Daqiang said.

"Master, is this river very deep?" Zhao Zimeng said.

"Isn't it? The river is indeed very deep, there are seven or eight meters deep in the middle of the river, this section is relatively shallow, go dozens of meters on both sides, and the water depth is at least ten meters or more. ”

Xiao Lao's judgment was correct, the water in the middle of the river was indeed very deep, no wonder some small wooden boats were driving close to the river bank.

"Master, are there a lot of people crossing the river here!" Xiao Lao Dao.

"Yes! I didn't even have time to catch my breath, and there were many people coming and going on this section of the ferry like me. ”

"You can always rest at night!" Xiao Lao wanted to know about the work in the ferry at night.

"At night, there are not many people crossing the river, but they are all in a hurry, either crossing the river to see a doctor, or crossing the river has something important, as long as someone greets them, then they have to shout at any time."

"Do you live at the docks?"

"Where I live—" Liu Laosi pointed with his hand to the other side of the river, and under a few large willow trees on the other side of the river, there was a small wooden house, half of which was on the bank of the river and half of it was suspended, and the suspended part was supported by a dozen wooden stakes and bamboo poles.

"So you don't sleep much at night."

"Isn't it? You can only squint for a while, and in half an hour at most, someone will greet you by the river. Only in the second half of the night can you sleep for a few hours. ”

"Master Liu, you are holding a boat at this ferry, is there a boat passing on the river at night?"

"Yes! Even in the middle of the night, there are boats passing by. ”

"What kind of ships are they?"

"It's all fishermen's boats."

"Fisherman's boat?"

"Yes, this Liuyedu, there are a few fishermen, at the beginning of the flood season, as soon as the river comes up, they set up nets to fish, in the past, on this river, all year round - spring, summer, autumn and winter, can set up nets to fish, now, can only fish in summer."

"Why is that?"

"In the summer, when the river comes up, it will bring some fish, and as soon as the flood season passes, as soon as the river falls, the river water stinks, and where do the fish come from in the stinky water? Now, the water quality is getting worse and worse, and the fish prefer clean water. ”

What Master Liu meant was that the domestic sewage along both sides of the river polluted the river water.

"Why do fishermen row their boats on the river at night to catch fish?"

"In addition to setting up nets to catch fish, they also put wire nets in this area, all year round, it is easy to wait until the flood season, of course, they want to catch a little more fish, once the flood season is over, as soon as the river falls, there is no way to fish."

"When the flood season comes, do they put down the wire mesh every night?"

"Night and night, rain or shine."

Xiao Lao is still powerful, if there is a fishing boat wandering on the river at night, it is possible to meet the murderer's boat. The murderer must choose a special time period, is it possible that the time when the fisherman's boat appeared and the special time chosen by the murderer overlapped?

"Master Liu, when does the fisherman's fishing boat usually come out at night?"

"As long as there are no more ships on the river, they will come out."

"Why wait until there are no cargo ships?"

"Aren't they going to go down the wire net? They had dozens of wire nets at once, and if there were cargo ships on the river, they couldn't get them, so they had to come out at night to lay the wire nets - during the day, there were too many ships carrying goods on the river. ”

"When is there no cargo ship?"

"There are basically no cargo ships around ten o'clock."

This kind of situation is impossible to understand without having an in-depth conversation with Master Liu. Zhao Zimeng feels that this situation is very important, and for the situation provided by Master Liu, there are two levels of interpretation:

On the first level, it is possible that the person who is on the surface of the river at night will encounter the murderer's boat.

On the second level, the murderer may also be a person who goes up and down the wire net on the river at night, first, they have a boat, which is a necessary condition for the murderer to sink the body, and secondly, they go up and down the wire net on the river every night and know the situation on the river well.

"Master Liu, are they in the middle of the river, or are they closer to the riverbank?" Xiao Lao's thinking is still thinking about extending deeply.

"Didn't I just say that the water in the middle of the river is too deep, and in summer, the flow of water is very large, and the wire mesh under them has to take root, otherwise, where will they go to collect the wire net? So you have to put a wire net close to the river bank - you know how they catch fish with wire nets? ”

"I don't know, please tell us about it."

"They first put the wire mesh in the water, and then after all the wire nets are finished, and then collect the wire mesh one by one, the mesh of this wire mesh is relatively small, and they catch some relatively small fish, this kind of wire net, as long as the fish are stuck in the mesh, it is difficult to get out. If they are lucky, they can catch dozens of catties of fish in one night. ”

"Isn't it? Sometimes, nearby residents wait by the river early in the morning to buy their fish. A man in his forties took Master Liu's words and said.

"Wang Fu is right, the fish they catch at night are very fresh, and the price is cheap, so it is very easy to sell."

The person who interjected was called Wang Fu.

While he was talking, the ferry had already docked.

Master Liu jumped ashore with an arrow step, tied a rope to the trunk of a willow tree, and set up the gangplank on the stone steps of the pier.

"Master Liu, you are busy, you have to be free, we will ask you some questions again." Liu Daqiang said, judging from the content of the conversation between Zhao Zimeng, Xiao Lao and Master Liu, Xiao Lao and Zhao Zimeng have not yet had fun.

"Yes! Master Liu, we have to add a little trouble to you. Zhao Zimeng said.

"Where is this, I have a lot of free time at night, you must not be polite, troublesome, can't talk about it, as long as I know, I must think of something and say something."

Master Liu helped Xiao Lao off the boat: "You slow down, step on your feet steadily." ”

There were already a lot of people standing on the dock, and if they wanted to continue the previous topic, they had to find another time.

When everyone got into the boat, Master Liu untied the rope, collected the springboard, waved the boat, and the boat quickly sailed towards the other side of the river.

Liu Daqiang led the three people directly to the office of the director of the Huashen Town Police Station.

Director Xu Pingchuan was talking to a public security officer about work, and Xu Pingchuan recognized Zhao Zimeng and Xiao Lao at a glance: "Xiao Lao, Captain Zhao, welcome, it's rare to see you in normal times." We have already heard about Moling's case, what needs to be done, Xiao Lao and Captain Zhao just command. ”

"Director Xu, you have summoned all the household registration police and the directors of the neighborhood committee here, and we want to have a meeting to find out the platoon."

"I'll do it now, you sit down and rest for a while." Director Xu said as he walked to the door of the office and said to the other office, "Xiao Chen, come over here." ”

Soon, a female police officer in her twenties walked in.