In the surveillance point near Tangzi Lane, Zuo Chong looked at the streets in the night and felt a little uneasy. The man in Tianfu likes to play tricks and is suspicious, so he cannot give up the opportunity to ask directly.

But after he and Wu Chunyang came, Min Ping's residence was very quiet. There were no pedestrians passing by or staying near Tangzi Lane. Tianfu could not be invisible. Could it be that he was thinking too much?

Unfortunately, in order to prevent shocking the enemy, the surveillance point cannot be too close to it and the monitoring equipment cannot be installed, otherwise the matter will be simple. Now I can't ask Min Ping, so I can only wait a little longer.

But a long time passed, Tangzi Lane was still calm and quiet, a bit terrible. Except for the sporadic lights, most residents have fallen asleep and the target residence is also on.

Zuo Chong thought for a while, turned around and asked, "What time is it now."

"It's ten o'clock, section chief." Wu Chunyang looked at his watch.

Zuo Chong frowned: "When is the target going out of the lights yesterday."

"A moment after nine o'clock." Wu Chunyang also realized something was wrong.

Zuo Chong sat on the stool with his eyes narrowed. Could it be that something happened to Min Ping? This is unlikely. Seeing that Min Ping's purpose was to identify, not to silence him, so he would not kill him directly.

Besides, when facing Tianfu, Min Ping will definitely be vigilant. Both sides are professional agents, and it is not that easy for Tianfu to kill her quietly.

Is this Min Ping reporting the message?

Zuo Zhongran looked up at Tangzi Lane. Tianfu had already arrived. Just under their noses, the other party came and left calmly, and why wasn't he discovered?

Wu Chunyang's political intelligence units are all old people, and he has a lot of experience in fighting Japanese spies. He is the first to disguise that the other party can hide the eyes of these old intelligences.

It seems to be wrong.

There are no suspicious people on the street, so what if the other party has not passed through the street? This is an old neighborhood with a relatively low wall and trained intelligence personnel can easily climb over.

Just like Jiang Jincai in the Butterfly Case, when this person was conducting counter-stalking, he once climbed over the wall and jumped out of the ordinary walking track. Then Tianfu could also use this method to secretly enter and exit.

“Chunyang, surrounding map.”

"Yes, section chief."

Zuo Zhong asked Wu Chunyang to find a map, then took it and spread it on the table, picked up a faint oil lamp, and carefully checked the surrounding terrain, although he was already very familiar with these situations.

But things on paper are more intuitive than memories, and there are always omissions in memories. The map can look down on the scene from a global perspective, making it convenient to search for the secret entry and exit channels of Tianfu.

He held an oil lamp in one hand and slid his fingers on the map. First of all, the south side of Tangzi Lane is Huiwen Women's School, which contains patrol guards and a long line of electric lights beside the wall. This road is blocked.

Pedestrians and vehicles pass by Zhongshan Road to the west from time to time. It is easy to find that it is crossed here. No abnormalities are found at the surveillance point there, so this direction can also be ruled out.

As for the east of Tangzi Lane, there is a dead end called Langhou Street. Going south is a residential area. Going north through Beimen Bridge, you will reach Zhujiang Road. No situation was found at the surveillance point of Beimen Bridge.

Then where will the other party go?

Zuo Chong put down the oil lamp, straightened up and began to think. There are two possibilities now. The first possibility is that Tianfu is hiding in Huiwen Women's School, and the second possibility is that the passage of Tianfu is very secret.

He turned to ask Wu Chunyang: "How is the situation of Huiwen girls studying? Especially those handymen who are free to move, do they have any problems in the background or their behavior is more mysterious."

"No, the background of the handyman is normal. They are all middle-aged people with families. The relationship network and movement trajectory are very clear. There is no long-term loss of traces. This is certain."

Wu Chunyang answered affirmatively: "As for the teachers and students in the school, they either live in group dormitories or go home to rest after school. Now there are only a few guards in the school to patrol.

These guards have been in our sight. They have not approached the vicinity of Zhuangzhen Lane. These people are very dedicated. They patrolled several times after dark, but did not find anyone infiltrated."

Huiwen Girls' School can temporarily put it down.

This basically concluded that the other party was using a secret passage to enter and exit, excluding the three directions of east, south and west. This passage could only be in the north, and the left helm turned his attention to the map.

To the north of Tangzi Lane is Zhujiang Road, but there is a small river without a name in the middle. This river is part of the moat of the former dynasty and connects rivers, ponds and trenches of Jinling City.

From the map, the river crosses half of Jinling to the east, and can reach many places, such as the National Government and Kunlu Temple. To the west, it crosses the Zhongshan Road not far away, and then flows to the outside of the city.

Beimen Bridge crosses it and connects Langhou Street and Zhujiang Road. Is it that Tianfu enters and exits Tangzi Lane through the river? Zuo Chong understands it. No wonder the surveillance point on the road did not find any problems.

"Chunyang."

Zuo Chong took a hard shot of the map: "Tomorrow begins monitoring the small river in the north, and geese are beaten all day long, but they are finally pecked by geese. The king of Tianfu, Badan, played hide-and-seek with us, TMD."

Wu Chunyang immediately understood and smashed his palm: "I've been watching the road in front of me, but I actually forgot the waterway. If I had thought of this earlier, I might have caught the other party now."

This cannot be blamed for this. Although the water network is densely populated in Jinling City, after years of construction and landfill, many rivers have become dead-end rivers or lakes, losing their original transportation functions.

In addition, the population has increased sharply in recent years, resulting in a large amount of discharge of domestic and industrial wastewater. It is better to say that it is a river than a stinky ditch. In this case, few people will notice this passage.

He said dejectedly: "It is said that when a prisoner in a place was robbed, the underground party jumped out of the blockade circle through the river. I will definitely learn from my lessons and will never make such a mistake."

After hearing this, Zuo Chong waved his hand: "This is not all your responsibility. I just realized that Tianfu will really kill someone and get back at the horse. It is not too late to fix the sheep. It is enough to pay more attention when setting up controls in the future."

He was actually quite upset. After all, the underground party retreated through the river, but he had the idea. Now he had forgotten it when he changed it to himself. This is because he was not comprehensive enough to think about the problem.

They had just thought that Tianfu might secretly observe Min Ping, but they didn't expect that the other party would dare to show up. However, it would be useless to regret it. They could only see if they could find the clues left by the other party.

And it has to be as soon as possible, because after dawn, nearby residents will go to the river to pour toilets, which will inevitably damage the traces of the scene. This is the first time they have seen the shadow of Tianfu and must seize the opportunity.

"Chunyang, find an empty wine bottle immediately, put some clean water in it, and then bring some medical alcohol to come over. I'll go to the river to take a look. Please pay attention to the movements around you, the other party may not have left yet."

Zuo Chong unbuttoned the buttons of his coat and reminded him: "Don't do it if you don't have absolute certainty. Tianfu is just a frightened bird. Once you find us, it will be troublesome to enter dormant."

"Okay section chief." Wu Chunyang nodded.

The surveillance site was well equipped with alcohol for rinsing the wounds, but the wine bottle was not easy to find. Finally, I found a vinegar bottle, which could be used as soon as possible. The spy quickly prepared the things.

Zuo Chong picked up the alcohol and took a sip, rinsed his mouth and spit it out, poured it on the collar and cuffs, confirming that he could smell it from a distance, so he walked out with the bottle.

This point is still wandering outside. Apart from the workers who come back from work, there are only drunkards and beggars. Not far from this, there is a night market. Drunkards who pretend to be returning late are more harmonious with the surrounding environment.

This is the focus of camouflage reconnaissance.

Left-mounted out of the surveillance point, first put water in the nearby alley, then grabbed the belt with your left hand and the wine bottle with your right hand, shaking along Langhou Street and heading towards the river.

He stumbled along the way, holding the wall and fumbled forward, lowering his head and making a sound of vomiting, and from time to time he held up the bottle of wine and putting a few mouthfuls into his mouth, humming a little tune.

Wu Chunyang in the distance did not pay attention to what Zuo Chong was doing, but focused on checking around, monitoring under unsatisfactory lighting conditions, which greatly tested the eyesight of the surveillance personnel.

A fleeting reflection, a looming black shadow, will be missed if you are not careful, but in the era without night vision equipment, intelligence personnel can only use this method to monitor.

After carefully exploring the surroundings, Wu Chunyang did not find any trace of Tianfu. This may be because the other party is hiding, or it may be because the other party has left, so he still needs to continue to observe.

He focused on the buildings by the river. If Tianfu was still in Tangzi Lane, he would definitely have some action when he saw the section chief going to the river. As long as the other party moved, things would be simple.

Zuo Chong walks fast or slow, too slowly, it seems deliberate. A really drunk person does not walk slowly, but he is slow in reaction, too fast and too fake, so it is difficult to grasp this measure.

From the surveillance point to the riverside, it took a normal person five or six minutes to walk. He walked seven or eight minutes, which was considered a normal range. Zuo Chong glanced around, and there was no one near the river bank.

Like all rivers in Jinling City, this river undertakes the functions of washing rice, washing vegetables, dumping garbage, disposing of human excrement, and washing clothes.

To achieve these functions, a wooden trestle extends to the center of the river to facilitate residents' access to water, which is also a good place to land.

This is because the river channel is not dredged or cleaned all year round, and a thick layer of silt has accumulated on the shore. Unless Tianfu doesn't mind seeing Min Ping with a stinky body, he must go ashore through the pier.

So what will the other party’s means of transportation be, swimming? Considering that the other party may be a doctor, this educational background should not be able to swim in a river full of human waste.

Boat? This is the only possibility.
Chapter completed!