Although from the existing detailed searches, the perpetrators of this theft case obviously entered Prince Gong's Mansion from the outside to commit the crime, the possibility of internal and external cooperation cannot be ruled out, because there is still a distance from the position of the criminal entering Prince Gong's Mansion to the stolen room, and there are two floors of courtyards in the middle. From the direction of footprints, after entering Prince Gong's Mansion, the perpetrators went straight to the target and did not stop in the middle. Either they had a certain understanding of Prince Gong's Mansion or someone provided information like them. Therefore, it is very reasonable for Zhou Mian to have doubts about the 16 people living in Prince Gong's Mansion. First of all, we naturally start from the inside, and after confirming that the suspect in the inside is basically lifted, the main aspects of solving the case will be transferred to the outside.

And early the next morning, the results of the technical analysis also came out.

According to footprint analysis, the criminals are two men and women. Because the small footprints are obvious in the shape of a woman's foot, the man is about 166-170 cm tall and the woman is about 156-160 cm tall. According to the results of the residual ash test for the residual ash, there are fibers, nitro, sulfur, rosin and other ingredients, which are relatively advanced fire breaks, but the technology of such fire breaks is similar, and the technical capabilities of this era are limited, so there is no more clues from the residual ash, so the source of this fire break cannot be determined.

However, this was also expected by Zhou Mian. He thought about it last night. At present, there are two directions to solve this case. One is the antique market. If the criminal steals three valuable items, he must find a channel for dirty sales. The antique market is of course a suitable location. Therefore, focusing on several time-honored antique and jewelry stores in Beijing may bring rewards.

However, it cannot be ruled out that the criminals themselves have channels to eliminate dirty things. After all, judging from the scene, the criminals this time are obviously veterans, and such veterans will not have channels to eliminate dirty things. Therefore, the second direction is the Double Swallow Balm where the criminals stayed at the scene. Although Zhou Mian could not quite understand the intention of the criminals doing this, that is, the criminals may be skilled and brave, or they may be to blame others, but this is also a useful clue.

So Zhou Mian first reported the case to Li Zhengdong, either sending people to keep an eye on the famous antique market and the main antique jewelry store in Beijing. Li Zhengdong also agreed with Zhou Mian's suggestion, so he immediately dispatched people to disguise himself and go to the famous antique market and the main antique jewelry store in Beijing to watch.

When looking for clues to the Shuangyan Bing, we can only start from the original Beijing office. After the East China Government occupied Beijing, the original Beijing office was naturally cancelled, and the staff of the Beijing office were divided into two batches, one was reorganized into the Beijing branch of the Ministry of Security, and the other was incorporated into the police system. These people worked in Beijing for a long time, were familiar with the situation, and knew many people, and had contact and relationships with people from all walks of life, naturally, including people from the martial arts of the Shuangyan Bing. Therefore, it is most appropriate for them to be responsible for finding clues to the Shuangyan Bing.

There are two other points that can be done. First, strengthen the inspection work at various intersections entering and leaving Beijing to prevent the perpetrators from escaping Beijing; second, check the outsiders who have entered Beijing in the near future to see if there are any suspicious people. Although Beijing has restored normal social order and has also established a local administrative system and a police system, Bi Jing has just occupied it not long ago and is also considered a front-line city. Therefore, the control over Beijing is still very strict. In addition to obtaining corresponding documents, it also needs to be strictly inspected.

A day later, the case made a major breakthrough. According to the investigation by the former Beijing office staff of the police system, the origin of the Shuangyan Balloon was found out. The owner of the Shuangyan Balloon was a man and a woman, known as male and female, and was a famous couple thief in the northern region. He has been famous for more than 10 years. He mainly operates in Hebei, Shanxi, Henan and other places. He is a famous thief in the world, specializing in stealing and stealing, but what he stole is valuable. Moreover, it is said that the couple not only has extraordinary martial arts skills, but also proficient in the art of flying eaves and walls, and climbing up the walls and houses on the walls as if walking on flat ground. The Shuangyan Balloon is the symbol of the two. Every time they do a major case, they will leave a double thief, which is equivalent to registering for themselves. According to some recollections, the couple also did a few tickets and bought in Beijing a few years ago, but soon disappeared.

After obtaining this information, Zhou Mian immediately found several former Qing court clerks who were retained and asked them about the male and female thieves. Sure enough, some people still remembered it, so they spent another day searching for the files and found the files of the two of them before. It turned out that the two had been to Beijing twice before, once during the Gengzi State, and committed the crime three times in Beijing. In 17 days, the stolen foreign merchants were all involved. Because Beijing was in an xenophobic fanatic at that time, this crime made the two famous and were regarded as heroes by Beijingers.

The second time was in 1905, when the two committed the crime again in Beijing. This time, they committed the crime four times, 33 days ago, once stole the Russian consulate and stole a sterling silver cross and a set of silver tableware in the consulate; once, they stole a Beile Mansion, stole a white jade statue, and two times they stole two big merchants, stole more than 1,000 taels of silver.

Originally, the two could have made a name in Beijing again this time, but in this year, the East China government launched an attack on the Northeast, and the Russo-Japanese War entered the second stage of the Far East War, and the battles and victory in succession were naturally more attractive and inspiring. Therefore, the Beijingers' attention to theft of male and female double swallows was greatly reduced. At the same time, two double swallow darts were found in the old file.

Comparing with the double-swallow dart discovered by Zhou Mian, although there are some differences in details, the size and style are basically the same. It can be determined that it is the same product, but the batches produced are different.

Through these information, Zhou Mian also gained a further understanding of the perpetrators this time. Their motive for committing the crime is obviously not only for survival, but also for being famous, which shows that the perpetrators are not only skilled and brave, but also have quite ostentatious personalities. The targets of their crimes are foreigners, but they are not ordinary civilians, and they do not harm human lives. This shows that the two still have a certain moral bottom line, or they are called respecting the rules of the martial arts world, and there are also principles of stealing, and they are not extremely vicious. In addition, the two committed crimes twice in Beijing, and did not only commit crimes once, so now they have a high possibility that they will stay in Beijing and wait for the next chance to commit crimes. However, in this way, they obviously have a great chance to catch the two and can fight the couple well with the thief.

However, the development of the situation was somewhat beyond Zhou Mian's expectations. Just the next day, another theft occurred in Beijing. This time theft was Prince Su's mansion. A double swallow dart was also left at the scene, stealing a pure gold octagonal pot and a jade Ruyi. It was only three days before the theft case of Prince Gong's mansion.

Based on the on-site reconnaissance in Prince Su's mansion and the analysis results, it can be confirmed that theft case in Prince Gong's mansion was committed by the same group of people, that is, the male and female couples. This made Zhou Mian lose face. He also wanted to fight with the couple in order to prove his name as a "detective". Then he knew that the couple seemed to know what they thought, and immediately committed another case and demonstrated to him. Therefore, Zhou Mian also secretly swore in his heart that he must catch the couple's thief and let out this anger.

However, although these two theft cases left some clues, it was not very helpful to solve the case, including the archive files left by the Qing court. Although Zhou Mian had a certain understanding of the situation of the couple, he did not have much help in solving the case without the record of the age and appearance of the two. There were no new discoveries in other aspects such as antique markets, intersections, etc., so Zhou Mian was helpless at this time and had no choice but to do anything.

Just one day later, the male and female double swallows actually committed the crime again. This time they stole the Prince Qing's mansion. However, this time theft was missed and was caused by the family of Prince Qing's mansion. As a result, the theft was naturally not successful. However, the male and female double swallows escaped from the mansion with their mastery and light body skills, and injured two servants in the mansion in the chaos.

Prince Qing Yili was captured by the People's Army together with Guangxu and Cixi. She is still under custody and reformed in Tianjin. However, because of this, his family did not flee and remained in Beijing. After the East China Government occupied Beijing, it did not expel his family. Not only did they let them live in the palace, but also allowed his eldest son Zaizhen to visit Tianjin.

Of course, after the father and son met in Tianjin, Yi Li repeatedly reminded him that he must obey the orders of the East China Government and must not disobey, nor should he participate in the secret opposition to the East China Government. This not only saves himself from being imprisoned and reformed in Tianjin, but also saves the lives of the whole family. Therefore, after visiting Yi Li and returning to Beijing, Zai Zhen ordered the door of the government to be closed tightly and to control his family to go out in depth. He also rarely sees guests. He also strictly restricts servants from causing trouble when going out, and even if he suffers losses, he must swallow his anger and live a very low-key life.

If it were just a stolen in the mansion, Zai Zhen would not intend to make a statement at all, but just thought it was to lose money and avoid disaster. However, because Prince Qing's mansion had a large population, even at night, there were many people patrolling and fighting for the night. Therefore, the male and female swallows were discovered by a refueler while unlocking the lock. As a result, they immediately screamed and called more than 10 families who had not slept at night. Seeing that the situation was not good, the male and female swallows immediately gave up theft and knocked down several families who besieged their families, then pulled the wall and fled.
Chapter completed!