"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, where do the fish come from in the stinky water?"

"Why do fishermen row and wander in the night when they set up nets 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."

Guo Lao is still very powerful, if there is a fishing boat wandering on the river at night, it is possible to meet the murderer's boat. The murderer will definitely choose a special time period, and the time when the fisherman's boat appears is not likely to overlap with the special time chosen by the murderer?

"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. ”

This kind of situation is impossible to understand without having an in-depth conversation with Master Liu. Ouyang Ping felt that this situation was very important, and there were two levels of interpretation of the situation provided by Master Liu: the first level, it is possible that the person who went up and down the silk screen on the river at night could meet 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?" Guo Lao's thoughts and questions are still thinking about extending in depth.

"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 use it to catch fish? ”

"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 of about fifty years old 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 Ouyang Ping, Guo Lao and Master Liu, Guo Lao and Ouyang Ping are not yet happy.