The exposure is even deeper. The cold rain in the early morning wakes the person up suddenly.

After Lu Chengfeng pondered for a long time, he felt that Wu Jingmo's words were very reasonable, so he continued his analysis:

"Wu Zuo has just come to do the autopsy, and the conclusion is quite consistent. Thirty-two people in the Jiang Mansion did die from strychnos poison. Judging from the physical signs of the corpses, the murderer should have committed the crime at Youshi. I remember, I heard that Xiao

When the beggar called for help, the sky was getting dark and snow had just begun to fall. Brother Jingmo, do you know when it started to snow?"

"Youzheng!" Wu Jingmo said without thinking. The auspicious snow heralded a good year, and every heavy snowfall in Jinghua City would be recorded by the Jingzhao Yin Mansion. Therefore, he was extremely sure that it was Youzheng!

"Then the murderer's time of committing the crime can be determined to be within half an hour from Youchu to Youzheng! But why did she choose this time to commit the crime? As we all know, Jinghua City always closes the gate at Youzheng and opens it at Maozheng.

If she chose to commit the crime at the wrong time, wouldn't she be setting herself up for trouble?" Lu Chengfeng thought thoughtfully.

"I have ordered people to post a notice at the city gate. Life is at stake. If there is an emergency, no one is allowed to leave the city unless there are special circumstances! I have also sent people to keep an eye on the city gate. As soon as we arrive at Maozheng, there will be people who are eager to leave the city.

Bring them back one by one for interrogation and questioning!" Wu Jingmo said seriously.

"I still don't understand why she chose this time to commit the crime which is very unfavorable to her?" Lu Chengfeng thought about it and touched his right eyebrow out of habit.

Suddenly, his eyes lit up and he asked, "Unless she has some motive to choose this time? Brother Jingmo, when do the people in Jinghua City usually have dinner?"

"Every household has different schedules, but they generally work at sunrise and rest at sunset. The time for dinner is probably between You hour and Xu hour." Wu Jingmo frowned and answered seriously.

Suddenly, he slapped his thigh and exclaimed, "You mean, she poisoned the dinner? So, between Youchu and Youzheng is already the best time to commit the crime! If everything goes well, she is likely to rush

We left the city gate before Youzheng!"

"Brother Jingmo, don't worry. I think she might have planned it like this. However, she never expected that she would be bumped into by that little beggar, so she took the knife to kill and silence him. Therefore, I think, chasing after

It might have taken her a lot of effort to kill the little beggar, but she might not have had time to escape.

"

Lu Chengfeng gently patted Wu Jingmo's back and comforted him.

"It makes sense. Since we infer that she crawled out from this culvert, then where this culvert leads may be the place where the little beggar met her! Let's go outside the courtyard wall and see if there is an open ditch or water channel.

!”

Wu Jingmo regained his energy, stood up with a tremor, and walked out.

"Wait for me!" Lu Chengfeng wanted to get up and follow, but the corner of his clothes got caught on a branch of the bush. He lowered his head and was about to break the branch.

But I saw that this low camellia tree, in this ice and snow, actually bloomed with clusters of pink-purple petals the size of fingernails. The leaves were also green, and the fragrance was not very strong. You can only smell it when you get closer.

Get the fragrance in it.

"Peony flowers are the most beautiful and fragrant in the country, and daphne flowers are the best with gold borders!"

This was clearly not an ordinary camellia, but a golden-edged daphne! Lu Chengfeng had an idea and thought about it. He casually broke off a golden-edged daphne flower and threw it into the culvert. Then he took three steps and two steps at a time.

Caught up with Wu Jingmo.

The two finally arrived at the northwest corner of Jiang Mansion, but they were both dumbfounded!

This is clearly the most central avenue in the south of Jinghua City! It runs from east to west and is a vast plain! There are no traces of rivers or ditches anywhere!

So, the clue ends here again!

Lu Chengfeng saw that Wu Jingmo had also been busy all night.

Wu Jingmo was a scholar, a son-in-law, and had a very strict upbringing. He rarely stayed up late, and his eyes were already red by now.

Lu Chengfeng encouraged him and said, "Brother Jingmo, don't lose heart, I already have a solution!"

"What else can I do? Listen, the rooster is crowing! It's almost Yin time!" Wu Jingmo was dejected, walking minding his own business, muttering to himself, "Brother Chengfeng, please don't comfort me. Now, let me be alone!"

"Brother Jingmo, have you ever heard of the siphon principle? The difference in liquid level can generate a force to fill the tubular structure with liquid. After that, place the end with the higher opening in a container filled with liquid. The liquid in the container will continue to flow. It flows out from the lower position of the opening through the siphon. The design of this Jiangzhai applies the siphon principle. It is not only a good water supply and drainage system, which can prevent floods during heavy rain seasons, but also a good water purification system.

To ensure that the water in the pool is always fresh and the running water does not rot!"

Lu Chengfeng analyzed the siphon principle that he learned in the 21st century middle school physics class for Wu Jingmo one by one. Unexpectedly, after middle school Chinese, middle school physics also came into play!

Wu Jingmo was confused after listening to his long words. He scratched his scalp and asked with a confused look, "What siphon? Which siphon? Which siphon? If little brother Chengfeng doesn't mind, can you do it?" Why do you want to say it again?"

Lu Chengfeng had no choice but to patiently translate the siphon principle and slowly analyzed it:

"The principle of siphon, in human terms, is that when two pieces of water are connected by a long and narrow pipe, the overall liquid level will maintain an equal trend. The small pool in Jiangzhai is the water surface at one end, and the culvert is that A pipe is connected to the water surface at the other end. No matter where the water surface is high, the water flow will naturally move to the other end."

Wu Jingmo finally understood. Isn't it just an old saying, water flows to lower places? It's such a simple and straightforward truth that even a child can understand, but Lu Chengfeng can actually say such a flower in his mouth, a long paragraph A long paragraph made him doubt his life.

So, he opened his mouth and said with a smile:

"Okay! You are really like a lotus flower! According to your theory, both ends must be balanced. So how can you be sure that the water is still flowing from the Jiangfu pond to the other end at this moment? Also, shouldn't we go back now? As for the question just now, if you can’t enter the culvert, how do you know where the water in Jiangfu flows? How do you know where the water at the other end is as you just mentioned?"

Lu Chengfeng knew that he did not have time to teach him about physical concepts such as pressure and air pressure. For the ancients, the principle of siphonage was indeed more complicated. Relatively speaking, what Wu Jingmo said "water flows to lower places" "It's very simple and easy to understand.

In short, he can think whatever he wants, as long as it doesn't delay things.

Lu Chengfeng laughed out loud and said, "Whether the small pond in Jiangfu is inflowing or outflowing at the moment, didn't Brother Jingmo see it with Zaixia just now? As for where the water at the other end is, we can only rely on it to find it. !”
Chapter completed!