Jiang Wanning changed into men's clothes and went to the Ordnance Prison with Xing Feng.

And Zheng Guan, who was squatting near the gambling house, saw a pigeon flying in the house behind the gambling house.

Immediately get on the horse and chase in the direction where the pigeon flies.

I kept chasing out of the north gate, but the pigeon was long gone, and I was annoyed.

I saw Mo Yu riding his horse and throwing something at him.

Zheng Guan subconsciously stretched out his hand to catch it, and when he saw it, he was overjoyed: "Mo Yu, you are still amazing." ”

Mo Yu's face was expressionless, isn't that trivial?

Since the ban was lifted, he was assigned by the adults to assist Zheng Guan, and Zheng Guan had noticed that there was a house near the gambling house where carrier pigeons came in and out, and they were all heading north.

This morning, Zheng Guan saw a pigeon flying over, and planned to gamble, betting that the other party would reply, so he asked him to wait outside the North City Gate, and when he saw a carrier pigeon flying by, he immediately hit it.

Zheng Guan untied the small bamboo tube tied to the pigeon's leg and pulled out a roll of paper from it.

I saw that it was written...... The ore was checked, and I was careful, and the sun and moon were painted on the line.

Zheng Guan was excited: "Mo Yu, let's go find an adult immediately." ”

Gu Zhouzhu had already checked the body of Qian Jiancheng, who died in his duty room, lying on the table, bleeding, and there was a teapot and a teacup on the table.

Taste the remaining tea in the teacup with a silver needle, and the silver needle quickly turns black.

He died of poison.

Jiang Wanning quickly arrived: "What's wrong?" ”

Gu Zhou stopped and pointed to the teacup: "It should be Heding Red." ”

Jiang Wanning picked up the teacup and sniffed it, then dipped it in a silver hairpin and sniffed the blood on the face of the eunuch: "It is indeed Heding Red." ”

"I'll examine the body."

Gu Zhou stopped calling and said, "You assist Mr. Jiang in the autopsy." ”

He didn't dare to have any objections, and honestly gave the young Mr. Jiang Ning a hand that was not talkative.

The subordinates over there reported: "My lord, I have been interrogated, no outsiders came to see Qian Jiancheng this morning, only Liu Jianzuo and the servant who was responsible for delivering tea and water had been on duty to Qian Jiancheng, but after Liu Jianzuo left, Qian Jiancheng also asked the servant to serve tea, and the servant said that the tea was made by him himself, and it could not be poisonous." ”

Gu Zhou stopped, looked at the ground, squatted down and dipped his fingers on the ground with a little yellow powder.

"You put your foot up and I'll see."

The subordinates did not know why, and raised their feet.

Gu Zhou stopped: "Let's take off your shoes." ”

The subordinate was embarrassed: "My lord, my subordinates ...... The subordinates' feet smell. ”

"Hurry up."

The men had to take off their boots.

Gu Zhou stopped taking the boot and looked at the sole, the sole was gray but not yellow.

"You go and see if there is yellow ash on the soles of the shoes of Liu Jianzuo and the servant who brought the tea."

"Yes." The subordinate turned around and remembered that his boots were still in the hands of adults.

"Adult ......"

"What else?"

"Boots." The subordinate pointed to the boot in his hand.

Gu Zhouzhu returned the boots to him.

The men put on their boots and hurried away.

Gu Zhou stopped and closed his eyes, and his mind appeared from the entrance of the weapons prison to the duty room of Qian Jiancheng, there were blue bricks and stone slabs along the way, and it was impossible to get the yellow ash, and only by stepping on the yellow mud would such a mark be left.

Recently, there has been a drought for several days, and the yellow mud has dried up.

Gu Zhouzhu seemed to think of something, walked around the duty room, and found that there was a small garden behind the duty room, and there were two newly planted camellia plants in the small garden, because the soil had traces of new turning.

Gu Zhou stopped and searched near the camellia, and sure enough, he found a few footprints, which were consistent with the footprints left in the duty room.

"Your Excellency, Your Excellency......" His subordinates were looking for him.

Gu Zhou stopped and said, "Here." ”

The subordinates heard the sound and came over: "My lord, my subordinates checked the soles of their shoes, and there was no yellow ash." ”

Gu Zhou stopped pointing to the wall: "You go over the wall and go out to see, what is the place outside?" ”

The subordinate said: "My lord, there is an alley outside this wall, and to the left is the Iron Alley, and to the right is the Tilan Alley." ”

Gu Zhou stopped and raised his eyebrows: "You are familiar with this?" ”

The subordinate said: "My subordinates have lived in Tilan Lane before. ”

Gu Zhou stopped and said: "You go and ask, between the hour and the three o'clock, there are people with fresh faces who have entered and exited this alley outside." ”

One hour is the time when the servant delivers tea, at that time Qian Jiancheng is still alive, and at three minutes, it is the time when his people come to arrest Qian Jiancheng, but find that Qian Jiancheng is dead.

After Gu Zhou stopped and ordered to go down, he came to the ear room that was temporarily used as the autopsy room.

Jiang Wanning was staring at the back of the deceased.

"What did you find?"

Jiang Wanning said: "My lord, come and see, there is a small pinhole here." ”

Gu Zhou stopped and leaned over, only to see that Qian Jiancheng's left shoulder was three inches down, and there was indeed a small pinhole, which was easy to ignore if he didn't look carefully.

"Do you think this pinhole was the cause of Qian Jiancheng's death?"

Jiang Wanning groaned: "People who have taken Heding Red will experience severe abdominal pain before they die, and they will subconsciously grasp the things that can be grasped around them, such as buckling the table and the ground, and will be in pain until they fall to the ground, roll, and crawl...... But nothing around the deceased was messy, even the papers were neatly stacked, and the person was lying on the table, there was only one possibility, the deceased could not move after taking the poison. ”

"Judging from the fact that there is no bruising on the deceased's body, there are two possibilities for not being able to move, one is that he was pointed, and the other is that he was poisoned by the paralyzing nerves first, and then he was poured with crane top red, I am inclined to the latter, and this pinhole is evidence. As for what kind of poison it is, I'll have to get some blood from the dead and go back to the test to find out. ”

Gu Zhou stopped and bowed slightly: "I found the path of the murderer to enter, he came in from the small garden at the back over the wall, the soles of his shoes were stained with the dust of the newly turned dirt, I have asked people to go to the alley behind to ask if there are strangers in and out." ”

Although it is a bit difficult to find the murderer on this basis alone, there are many strangers coming and going in Tilanlane and Iron Lane every day.

At this time, Zheng Guan and Mo Yu came.

Gu Zhou stopped and saw Zheng cares about it: "Is there a situation?" ”

Zheng Guan handed over the secret letter: "My lord, this is the secret letter from the carrier pigeon released from the house opposite the back door of the gambling house this morning, and Mo Yu has beaten it down." ”

Gu Zhou stopped reading the secret letter and handed it to Jiang Wanning casually.

"Have you touched the bottom of the house owner?"

"The residents near the gambling house, all the subordinates have figured it out, the house was rented by a person named Mu En three years ago, I don't know what to do for a living, since the subordinates monitored the area, I haven't seen the owner of this house go out, only a dumb old servant goes out to buy vegetables every day."

Jiang Wanning on the side suddenly said: "Sun, moon, could it be Mr. Ming?" ”

Gu Zhou stopped and looked at her: "Who is Mr. Ming?" ”

Jiang Wanning told the third elder brother Jiang Shi's discovery.

Gu Zhouzhu's expression was awe-inspiring, and he was trying his best to get fine iron and steel from Daqi, all of which were urgently needed in wartime, could it be that this person named Mu En was a fine work placed in Daqi by the Great Shu Kingdom?