Taisun came to Xia's house as a guest this time, it was a very enjoyable time, he stayed for a long time, had lunch, tasted several special meals and snacks of the Xia family, and after taking a nap, he reluctantly cleaned up. At the time of Shen Zheng, it was still the carriage that came, carrying the grandson back to the Yanwang Mansion.

Taisun took another way back, but Liu Xie sent someone to secretly escort him, and then used a telescope to choose two commanding heights to observe the surrounding environment.

Watching the grandson return to the Yanwang Mansion safely, Liu Xie returned to the palace to resume his life.

"Can anyone spy on Congxian along the way?" The Emperor asked.

Liu Xie sat on the chair of the emperor's head and replied respectfully: "Some people noticed that there were secret guards on the street, and there were also those who immediately delivered the news, but no one paid attention to King Yan's vehicle. ”

The emperor remembered that Liu Xie had said before that he planned to use the telescope as an assistant to protect the grandson this time, so he waved his hand at the several eunuchs and palace maids serving in the palace and ordered them to retreat.

Only the emperor, Liu Xie, and Sun Congshan were left in the Renxin Hall.

Liu Xie didn't wait for the emperor to continue to ask, and had already talked about the effect of using the telescope: "The remote monitoring made by Weichen with the telescope is very effective, standing on a high place and overlooking it, there is an unusual deployment of personnel within a radius of a few miles, and it can be found immediately that it is really a divine object." ”

"Yes, such a divine ......object," said the Emperor, putting aside the book in his hand, with a little regret, "I don't know when the telescope that will be used as a prisoner will be produced." Seeing that it is the season of green and yellow, the border pass is at this time, and it is often harassed by Beiyi. If the telescopes can be sent to the army as soon as possible, and a few more observation points can be built in the northwest, it will definitely be able to effectively prevent the surprise attack of Beiyi. ”

Liu Xie hesitated for a moment, and said tentatively: "Or, first send the two telescopes in Weichen's hands to the military department and equip the border garrison." ”

The emperor waved his hand: "No need, the telescope is a confidential military supply, and the transporter must not only be reliable, but also have high combat power." It was a bit of a waste to use these hands for the sake of two telescopes. Besides, if you look at the long line of defense at the border pass, if there are only two telescopes, the effect is not very great. ”

As he spoke, he changed the topic: "King Chengjun, has there been any progress recently?" ”

This is also one of the reasons why Liu Xie entered the palace today, hearing the emperor's inquiry, he sat upright and replied: "I was about to report to Your Majesty, after Weichen got the telescope, he arranged for someone to monitor the Chengjun Wangfu for twelve hours a day. ”

The emperor's expression became focused: "Have you found anything?" ”

"Yes," Liu Xie replied in a very affirmative tone, "After these days of observation, there should be a tunnel leading to the outside of the Chengjun Palace, and at present, it seems that there are three such tunnels. ”

"Humph! Sure enough, it's scheming. The Emperor's brows furrowed immediately, "Can you determine where the tunnel leads?" ”

Liu Xie shook his head: "Weichen and deployment can only be determined from the personnel exchanges in the Chengjun Palace, and there are three rooms in the County Palace, and there are different personnel exchanges in the County Palace, so they should be authentic." As for where the tunnel leads, it is impossible to find out. ”

"Yes, I understand." The emperor's face softened, and he was too anxious to ask such an inconsequential question.

Since Shao Yi told Chengjun Wang that his behavior was different, with Liu Xie's means, he has been investigating for so long, but there has been no breakthrough.

It can be found that there is a tunnel in the Chengjun Palace, also because the telescope can observe the situation in the Chengjun Wangfu from a distance, but it is a telescope, but it is impossible to penetrate the house and the ground to see the underground situation.

Liu Xie was indeed resolute in his work, and after getting the telescope, he immediately began to look for observation points.

There were restrictions on the construction of the imperial court, especially the imperial palace, and the large area around the imperial palace was not allowed to have buildings and houses higher than the imperial palace.

Other officials and clans in the capital also have such taboos, and they are reluctant to live near high-rise buildings near their mansions. After all, no one wants their life to be seen in the eyes of others.

It's just that the imperial court didn't give them too strong a guarantee in this regard.

Therefore, the mansions of the officials and nobles can only rely on their power, and they are not allowed to build two- and three-story pavilions around their houses. But no matter how far away there is no possible area to be spied on, then there is no need to restrict.

It was with this convenience that Liu Xie chose two mansions with pavilions and towering trees to monitor the Chengjun Palace. Such a mansion is that there will be no Chengjun Wangfu in the future, and it will also be useful for monitoring other places.

After these days of surveillance, Liu Xie regretted more than once that if he got the telescope, it was the spring and summer of the trees, then this surveillance work would be much more convenient.

It is a towering tree, and the canopy is much higher than a three-story building, and it is directly hidden in the canopy, and the view will be more open.

However, it's not bad now, but I've found some clues.

Without the assistance of a telescope, Liu Xie, who was struggling with his investigation work, was very content, and he continued: "Wechen has asked people who are good at portraits to observe through telescopes and draw people who appear in the Chengjun Palace's mansion through the tunnels. This began to make a secret investigation in Beijing. ”

"That's a good idea." The Emperor nodded. If these people are found, they should be able to find out the court officials who are in contact with King Chengjun if they are not prepared.

This is what bothers the emperor the most, and it is very convenient if he only deals with it as a county king.

Just like now, there are three tunnels in the Chengjun Wang's Mansion leading to the outside of the mansion, and only this one, Chengjun Wang has no way to explain, and he can't run away with bad intentions.

However, as the king of Chengjun, who was secretly planning to rebel, he could find out the forces that were attached to him in order to uproot this force.

Liu Xie also broke the news: "Once, when King Chengjun's study was opened, a guard who was on guard vaguely saw that there was a person in the study whose silhouette was very similar to Chai Mao, the household servant. Seeing that the emperor's eyes were round, he hurriedly added, "It's just that it's a bit similar, and I don't dare to be 100% sure." ”

The study of Chengjun Wangfu is one of the three authentic exits that Liu Xie can affirm.

Those who can come out of the room at the exit of the tunnel and walk around the palace are not big people. Heavyweights, just like King Chengjun's study, if there is a visit from a senior member of the DPRK and the Central Committee, it must be in the study to talk about things, and leave immediately after talking.

According to the caution of King Chengjun, it is impossible to let important people come out and wander around the mansion.

The reason why I can see Chai Mao is that the element of luck is high. It is also thanks to the fact that the doors and windows of decent mansions are made of glass, and the room is brightly lit, and it is enough to see the situation in the house clearly just by opening and closing the door.

Although the emperor had long guessed that there must be court officials attached to King Chengjun, he couldn't help but be angry when he heard it with his own ears.

Liu Xie wasn't sure that it must be Chai Mao, but since he said it, he was sure of it.

"Chai Mao? Good, good! The emperor grimaced. The household squire is also an important official of the imperial court, and he is in the court every day, leading the court's fortune every year, but with the intention of seeking the dynasty and usurping the throne, it is simply a crime that cannot be punished!