The Spring Festival and winter holidays of 1986 passed quickly.

In early March, one evening after the opening of the School of Medicine of Beijing Normal University, Xiaohui, Taiduo, Hu'er, Wulong and Erya were drinking tea and chatting in the living room of their home at No. 88 Sanhutong.

Xiaohui said: "Alas! The five of us have all graduated in two and a half years! In order to successfully graduate, everyone must concentrate on studying! In the future, no matter what happens, everyone must communicate with each other! We must not do the same as the last time we dealt with Professor Gao Decai! Hu'er and Wu Long! Although the classmates and teachers in the school do not fully understand what is going on! However, there are still rumors in the school that this incident was caused by Wu Long who took Professor Gao's soul and caused Professor Gao to jump off the building! If the police have a soul identification department, this time, Wulong and Hu'er will not be able to escape the involvement!"

Everyone laughed!

Wu Long smiled and said: "Alas! I can't blame my master for this matter! I asked my master to do this! If it weren't for the fact that the surname Gao was too rampant! We wouldn't have done anything to him! Actually, he decided it himself, and we can't be blamed entirely for this matter!"

Taiduo said: "Alas! Now, we are in school, and our teachers and classmates are avoiding us! They are afraid that we will not be good for them! Many people are secretly calling us demons!"

Hu'er said: "Alas! That's fine! We don't have to deal with them anymore! Let's study hard and study medicine! Anyway, in the past two years, we have mainly been doing internships and experiments in the hospital! We haven't had much interaction with teachers and classmates at school!"

Erya smiled and said, "Alas! I feel that this is very good! Now, the teachers and classmates are very polite to us, and no one dares to bully or offend us! At the same time, we have graduated, and we don't need them to help us assign jobs! Therefore, I feel that it doesn't matter if they are good or bad to us!"

Everyone laughed!

......

After this meeting, Xiaohui and the five of them really managed their words and deeds seriously, they didn't care about the outside world, and concentrated on studying and studying medicine.

Since then, they have been working in the mornings and evenings to attend lectures, do experiments, take exams, or work as trainee doctors at the city's hospitals.

......

Before they knew it, they entered the summer vacation of early July 1987!

At 8 p.m. on July 6, Xiaohui, Taiduo, Hu'er, Wulong and Erya were at home at No. 88 Sanhutong to discuss how to spend the summer vacation.

Xiaohui smiled and said, "Oh, we've finally come to an end!" Wulong! Erya, do you want to go back to Xianling County with us for the summer vacation!"

Wu Long smiled and said, "Alas, I want to go! But, doesn't this home need to be taken care of?!"

Taiduo smiled and said, "Alas, what else do you need to take care of! You and Hu'er can both fly the divine airship, and we will move the valuable things back to Xianling County! Alas! After the next semester begins, I will go to other places for an internship for a year!"

Erya smiled and said, "Alas! That's great! We can go to Xianling County with you for the summer vacation! Wu Long told me, the scenery there is very beautiful, like a fairyland! I have long wanted to go to Xianling County to play!"

Wu Long said: "Alas! I heard that this time the internship before graduation will be arranged by the school! The five of us have a bad relationship with the teacher! We must have been assigned to the worst place for the internship! The worst internship location is a hospital in the desert of Xinjiang! I don't know when I offended the teacher! He named me and Erya and insisted that we go to that hospital for internship!"

Hu'er said: "Yes! I am a full honor student, and the intern teacher in charge of our class also talked to me and asked me to go to a hospital in the desert of Xinjiang for a year of internship! He said that the hospital is very much in need of a talent like me! So I immediately agreed to him!"

Taiduo smiled and said, "Alas, Huzi! You also agreed too happily! The teacher asked many students to go to that hospital for internships, but none of them wanted to go! Later, the teacher could only let me and Xiaohui go to that desert hospital for a year of internship, and he still said that if we don't go, we won't graduate!"

Erya smiled and said, "Yes, I like the desert! When the time comes, we will be able to see a lot of camels!"

Xiaohui said: "Alas! I heard that the hospital was originally in a desert oasis, and this oasis was originally a big farm! Later, it became a desert! Now there are still several thousand people there who are curing sand! Therefore, the hospital will continue to be preserved! Alas, I will go there to do good deeds! I heard that there is a serious shortage of water there! And all the water pumped up from the wells is salty! Everyone should be mentally prepared!"

Wu Long smiled and said: "After arriving at the desert hospital, the bosses will drink water! I'll solve it, I will drive the god airship to the Tianshan Mountains every day to transport snow water back! I guarantee that you will quench your thirst! There is no problem with taking a bath!"

Everyone laughed!

......

At 9 o'clock in the morning on July 7, Officer Wu Zhencha and several police officers, who were originally handling the case at Jimei Hospital, suddenly came to No. 88 Sanhutong to look for Hu'er.

Hu'er, Xiaohui, Taiduo, Wulong, and Erya received Officer Wu and others in the living room of their home.

Now, we are in great trouble! At present, we are in charge of the drivers of the subway trains, the maintenance staff of the subway lines, and the underground attendants, and they often faint and go into shock in the subway! After their accidents, the results of the examination were all low blood pressure and insufficient blood volume! However, there was no blood loss at the scene! Several workers who had been on night duty for a long time died in shock at work! If this continues, the workers will not dare to go to work! The subway service in the whole city will be suspended! ”

Hu'er said: "Have you checked the daily food and drinking water of the subway employees?!"

Officer Wu said: "We have checked and there is no food poisoning! We have also checked the air and environment of the subway for the content of toxic gases and the amount of radiation! There is no problem with these indicators! Huzi, I suspect that this case may have been done by the White Beast Demon! The situation of this case is too similar to the case of the Guimet Hospital!"

Hu'er said: "Alas! If this is the case, it will be very troublesome! The subway tunnels in this city are several hundred kilometers! Moreover, there are many underground rooms of all kinds! At the same time, these places do not see sunlight for a long time, and it is very easy to hide the devil! Therefore, it is very difficult for us to find out where the devils are hiding?

Officer Wu said: "Huzi! As long as you are willing to help us get rid of the demons! We are willing to provide you with all the information and fully cooperate with your actions!"

Hu'er smiled and said, "Officer Wu! Our Xiuzhen Association has set up new rules! We all want my sister Xiaohui to make up our minds about big and small matters! You can ask her! What she says, we will do it?"

Officer Wu smiled and said, "Ms. Mo Xiaohui, for the sake of this city, you can help us!"

Xiaohui smiled and said: "Officer Wu! Don't talk like that! We are also citizens, and it is our duty to serve the city! Actually, you came to ask us for help! We can't shirk it! Huzi! You go and discuss with Officer Wu and them a specific plan of action!"

Hu'er said, "Okay! Wu Long and I will go to your police station to find out the details with you! Then, let's discuss the matter of searching and dealing with the devil together!"

So, Huzi and Wu Long drove the van and followed Officer Wu and their car to the police station.

When they arrived at the police station, they conducted a case analysis session in an office.

A police officer makes a comprehensive report on the frequent road sections, stations, time periods, etc. of the case.

Officer Wu said: "Let me talk about the operation and operation time of the subway! Our subway runs on a two-way track! Starting at 6 o'clock in the morning, the subway trains depart from the two stations of the starting station and the final station at the same time! Then, a train follows up at an interval of 15 minutes! After 11 o'clock in the evening, the subway trains begin to gradually stop operating! From 12 o'clock in the evening to 5 o'clock in the morning of the next day, the line maintenance workers inspect and maintain the subway tracks and roadbeds! Electricians inspect and maintain the power supply lines and systems in the tunnels! Of course, there are also mechanics. Plumbers and others carry out contact maintenance of all kinds of mechanical and electrical equipment and pipelines in the subway! Generally, accidents occur between 8 and 11 p.m. for station workers! Accidents occur between 1 a.m. and 4 a.m. for tunnel maintenance workers! The situation of the frequent road sections, the date of the incident, and the number of people involved in the incident, my colleague has just talked about it!

Hu'er said: "Through the introductions of the two police officers, it can be seen that this case began to appear in the middle of last month, and it started at Station A! Then, the case began to spread and develop in the direction of the two opposite lines of Station B and Station C! Moreover, the section of the road where the case occurred frequently was also centered on Station A, gradually unfolding in both directions of the line, and gradually weakening! Therefore, I believe that there may be a devil's lair at Station A! The devil went out to commit crimes from here, and then returned here to rest and hide!

Officer Wu said: "Master Tiger's analysis is very reasonable! Site A is the largest transportation hub station, with many equipment, many rooms, and the most concentrated staff! Therefore, we must first investigate Site A! Master Tiger! Look what we should do!"

Hu'er said: "Officer Wu! These devils are very smart! If they feel a change, they may immediately move their nests! Therefore, at 5 p.m. today, we will suddenly take action against Site A! The method of action is that at 4:30 p.m., all of our operatives will enter Station A, Station B, and Station C! At the same time, at 5 p.m., all subway trains will be suspended, and passengers and staff will be suspended from entering and leaving the station! The police and the subway company will arrange the operation by you! In terms of dealing with the devils, Wu Long and I are responsible for eliminating the demons at Station A! Dong Taiduo is responsible for intercepting the fleeing devils at the entrance of the tunnel where site B connects with site A! Xiaohui and Erya intercept the fleeing devils at the tunnel entrance where site C connects with site A! We will try to kill these devils before 7 o'clock tonight! and restore subway traffic! Then, we will give you another set of plans to prevent devils!"

Officer Wu smiled and said: "Master Tiger! You are really a divine soldier! So let's do it! It's 11 o'clock in the morning, let's arrange the police force and on-site security, and work with the subway company to solve the problem of train suspension and passenger placement! Master Tiger! You should also do your arrangements and preparations!"

After deciding on the demon sweeping plan, Hu'er and Wulong left the police station and drove back to No. 88 Sanhutong.

When they returned home, everyone had a meeting in the living room.

Hu'er explained the demon sweeping plan determined with the police in detail.

Dong Taiduo smiled and said, "Okay! Huzi has just equipped us with a divine cannon! We also want to try the power of the divine cannon! These devils are lucky, let them touch!"

Er Ya smiled and said, "Brother Taiduo, don't be happy too early! Huzi and Wulong are in charge of cleaning up the devil's lair at Site A! Can they send out devils to make us happy?!"

Everyone laughed!

......