Xiao Hei ran very fast, but Xia Rufei, Guo Zhan and Tian Feilong were both special forces elites who had experienced many battles and could still easily keep up.

Liang Qiming's laboratory is located in the corner of the campus. There are not many people passing by here, so no one noticed the strange scene of three people running wildly with a dog.

However, Xiao Hei ran out for about 200 meters and stopped, sniffing constantly in place, as if he was a little hesitant, not sure which direction to go.

Tian Feilong gasped slightly, with a look of disappointment on his face, and said, "The police dog sent by the special police to support him yesterday almost lost his target after chasing him to this position. Well... Xiao Hei chased him more than ten meters more than the police dog yesterday."

Xia Rufei said calmly: "It is possible that the group of people used some method to cover up the smell on their bodies, but don't worry, they can't completely cover it up, especially the smell of chemical reagents on Professor Liang's body is very strong, and Xiao Hei is still working hard!"

Guo Zhan nodded and said, "Blood Wolf, whether you can find useful clues depends on Xiao Hei..."

The three of them stared at Xiao Hei's movements, and saw Xiao Hei hesitating on the spot for about half a minute, then finally determined a direction and continued to run forward.

But this time, I was not as sure as I was at the back door of the laboratory just now. I ran a little slow, and I stopped from time to time to smell the smell to determine the direction.

Xia Rufei and the other two followed Xiao Hei tightly, stopping and stopping all the way. Xiao Hei's traveling speed became slower and slower, and it was obvious that the smell was gradually fading.

During this period, I changed directions several times and felt that the route of the group was irregular, and sometimes even took a short turn.

After walking forward for more than a hundred meters, Xiao Hei stopped.

In front of it was a sewer manhole cover. It sniffed around the manhole cover for a long time, walked around the manhole cover for a few more times, and whispered to the manhole cover in a low voice.

Xia Ruofei and Guo Zhan and Tian Feilong looked at each other and said, "Wolf King, it seems that the group of people entered the sewer from here yesterday."

Tian Feilong nodded and said, "The possibility is very high. Many surveillance cameras on campus, including several cameras at the school gate, did not capture the whereabouts of this group of people. Apart from walking from the ground, I can't think of any other way they can do!"

After saying that, Tian Feilong came to the sewer manhole cover and squatted down, looked carefully for a while, and said, "It should be true! This manhole cover has obviously been opened and put back in the near future. It does not exactly match the old traces!"

Tian Feilong is also an expert in trace science. After the sewer manhole cover is opened, even if it is carefully placed back, it will not be exactly the same as before it was opened. Even if there is any deviation, there will be clues left.

"Let's go! Let's go down and continue tracking!" Xia Ruofei said without hesitation.

Guo Zhan reached out to stop him and said, "Blood Wolf, I'll call all the other comrades over first. It's too dangerous to continue like this!"

Tian Feilong asked in confusion: "Captain, it's been nearly twenty hours since then. Will that group of people still hide in the sewer? Is it unlikely?"

Guo Zhan said seriously: "It is not that there is no such possibility. We cannot fight unprepared battles! Yesterday's lesson is profound enough. I don't want any comrades to shed blood and sacrifice again!"

It seems that the sacrifice of Lao Luo's squad leader has a great impact on Guo Zhan. In Xia Rufei and Tian Feilong's view, Guo Zhan is a little too cautious.

Xia Ruofei thought for a while and said, "Flying Dragon, what the Wolf King said makes sense. The most dangerous place is the safest. This group of people is indeed possible to take advantage of our psychological blind spots and hide in a corner of the campus in the first few days..."

When Guo Zhan heard that Xia Ruofei also agreed with his point of view, he nodded and prepared to take out his confidential phone to contact several other team members.

However, Xia Rufei changed his mind at this time and continued: "Wolf King, but I don't think things can be delayed. The possibility of that group of people still hiding in the sewer is that there is, but it is very small. We cannot delay the fighter plane because of a low-probability event. Besides, we are prepared this time and will never be caught off guard like yesterday. What do you think?"

After saying that, Xia Rufei looked at Guo Zhan quietly and waited for him to make a decision.

Now Xia Ruofei has been temporarily recalled to the army, and he still has that formal document in his arms! In a legal sense, Xia Ruofei has now restored his identity as a soldier. He takes a step back and says that if Xia Ruofei encounters misfortune in this mission, it is considered that active-duty soldiers will die in the war. The military flag can be built at the memorial service, and there is no suspense to award the title of revolutionary martyr.

However, since he has restored his identity as a corporal in the Lone Wolf Commando, he naturally has to accept the leadership of Guo Zhan, the highest commander of the Lone Wolf Commando. If Guo Zhan insists on not agreeing to go down the well, Xia Rufei cannot disobey the order.

Guo Zhan stared at the manhole cover, his face changed, and he was obviously weighing Xia Rufei's suggestions. Xia Rufei and Tian Feilong were standing quietly beside him without interrupting Guo Zhan's thinking.

After a while, Guo Zhan nodded and said, "Okay! Let's go down first! But now that there are new clues, the other comrades must come here immediately. I'll contact them first, and then we go down the well!"

"I understand!" Xia Ruofei nodded heavily and said.

Soon, Guo Zhan contacted other commandos who were on standby through confidential mobile phones and asked them to quickly arrive at Sanshan University.

Then the three of them were about to open the manhole cover and enter the sewer.

Xia Rufei walked to the side of the manhole cover, and Tian Feilong immediately came over to help the workers open the manhole cover. There were special tools for hooking the hole in the manhole cover, and it was easy to lift it. Now without tools, even if they were much stronger than ordinary people, the places without stress were not easily lifted.

However, Xia Rufei waved his hand and signaled that there was no need.

He squatted down, grabbed a small gap at the edge of the manhole cover with his fingers, pushed it hard to make the gap as large as possible, and then put his fingers in and lifted the manhole cover with a light force.

Next, it became simple to have the force point. Xia Rufei grabbed the manhole cover with one hand and easily lifted it aside, as if he was carrying a ball of light cotton wool in his hand.

Guo Zhan looked at Xia Rufei with some surprise, thinking that this kid not only did not regress after he was discharged from the army, but seemed to have become much stronger!

Xia Rufei patted Xiao Hei's head and said, "Xiao Hei, continue to track the smell after going down, but there may be enemies inside, remember not to make any sound!"

Xiao Hei had already started to enlighten his mind, and he nodded immediately after hearing this.

Guo Zhan and Tian Feilong couldn't help but secretly exclaimed when they watched it. It was really not easy to train a local dog to become Xiao Hei so human!

After Xia Rufei finished speaking, he reached out and hugged Xiao Hei and prepared to drill into the sewer.

Seeing this, Guo Zhan shouted: "Blood Wolf, wait a moment! There may be danger below, I will take the lead!"

This is also the tradition of the Chinese army. When there is danger, the commander always takes the lead.

Xia Ruofei said: "Wolf King, after going down, he mainly relies on Xiao Hei to track it. It only listens to me, so I have to be in the front."

This reason is very sufficient, and Guo Zhan couldn't refute it. After pondering for a moment, he took out a pistol from his waist and handed it to Xia Ruofei and said, "The main equipment is in the hands of other comrades. You can use this gun!"

It is naturally the most dangerous to be in front of him. Guo Zhan also handed over his only weapon he carried with him to Xia Rufei.

After Xia Rufei took the pistol, Guo Zhan took off his coat and prepared to give the bulletproof vest he was wearing to Xia Rufei.

Xia Ruofei waved his hand and said, "Captain, you don't need a bulletproof vest! You can wear it yourself!"

After saying that, Xia Ruofei put his pistol in his arms, then sat at the sewer entrance, holding Xiao Hei with one hand and holding the ladder on the edge with the other, and quickly drilled into the sewer.

Xia Rufei is very confident in his current strength. Even if he encounters unexpectedly, his reaction speed that is unusual in ordinary people will definitely allow him to avoid danger in time. However, Guo Zhan and his friends wear bulletproof vests, which is equivalent to an extra guarantee, so he firmly refuses to accept this bulletproof vest.

Guo Zhan pulled him and couldn't hold him back. Xia Rufei had already entered the sewer. He didn't dare to neglect him. He hurriedly entered the sewer one by one with one behind.

Tian Feilong, who fell to the end, did not forget to move the manhole cover that Xia Rufei placed beside him, so as not to accidentally fall in when teachers and students pass by.

There was a very unpleasant smell in the sewer. Xia Rufei frowned slightly and reached into his bag. In fact, he took out a dozen disposable masks from the Lingtu space, took three of them and put them on, and the smell was slightly relieved.

He distributed the remaining masks to Guo Zhan and Tian Feilong.

Guo Zhan said unexpectedly: "Blood Wolf, the equipment is quite complete!"

Xia Rufei grinned and did not explain too much.

As for Xiao Hei, he could only bear it. At the first time, there was no mask that suited its specifications. In addition, Xia Rufei also had to rely on him to track the smell! How could he cover his nose?

There is also a layer of shallow sewage in the sewer, which is very disgusting when stepped on it. However, for Xia Rufei and the other two, they have experienced many times in this much harsh environment, and this situation is simply a slight silence.

However, Xiao Hei has always lived in the spiritual map space with picturesque and rich spiritual energy. As soon as he entered the sewer, especially when he stepped on the sewage, he was still very uncomfortable at first. After a while, he reluctantly stepped forward.

Guo Zhan and Tian Feilong are equipped with multi-functional combat watches, which can achieve simple air monitoring functions. If the air quality in the sewer will seriously threaten life, the watch will immediately vibrate and alert.

The odor in the sewer is very strong, which also causes great interference to Xiao Hei's identification of direction.

It sniffed, hesitated for a while before choosing a direction to move forward.

The sewer is well connected. Without Xiao Hei's guidance, Xia Rufei and the others would not have found the way forward for the group.

Xiao Hei walked in front, while Xia Rufei and the other two followed closely.

The three of them all consciously took a lighter pace. Xia Rufei and Tian Feilong also held the standard pistol loaded with bullets tightly in their hands, paying attention to the situation ahead at any time.

In such a dark and narrow environment, once you encounter an enemy, the situation will be very dangerous. Even if the opponent shoots randomly, you may be hit by a stray bullet.

They didn't even call the flashlight, but just put a small fluorescent sticker on Xia Rufei's back, pushing forward one by one.

Xia Rufei had excellent eyesight and had quickly adapted to the sewer environment, so he could easily keep up with Xiao Hei without lighting. This also made Guo Zhan and Tian Feilong secretly amazed. It felt that after Xia Rufei retired from the army, he seemed to have stronger abilities in all aspects.

Xiao Hei walked and stopped and returned to another section when he was uncertain, and then went to the fork to determine the direction again.

The three of them made a turn in the sewer for about seven or eight hundred meters.

The special forces team members are generally very sensitive to the direction. Although they have turned several times in the dark environment, they can still roughly judge that they are now about 500 meters southwest of the experimental building.

Finally, Xiao Hei came to a place and stopped, and whined softly at Xia Rufei.

Xia Rufei saw at a glance that there was a vertical upward passage where Xiao Hei was staying, and a ladder was also installed on the inner wall. Obviously, this was a sewer entrance.

Xia Ruofei quickly asked softly: "Xiao Hei, what do you mean... did those people go up from this wellhead?"

Xiao Hei nodded immediately.

Guo Zhan and Tian Feilong followed quickly, and now it was basically confirmed that the group of people were not hiding in the sewer, so Tian Feilong immediately turned on the flashlight and checked near the exit.

Soon Tian Feilong shouted: "Captain, Captain Xia, Xiao Hei's judgment should be correct. There are traces of pedaling on this inner wall, and it should be left behind recently."

Xia Rufei also went over and took a look, nodded and said, "If I guessed correctly, it should be Professor Liang who intended to stay."

Guo Zhan and Tian Feilong nodded at the same time to agree that the group of people could sneak into China and rob Liang Qiming away under the nose of the lone wolf. They must be their top special war master in China. Naturally, it is impossible for them to go up the ladder to leave such obvious traces on the inner wall.

The only possibility is that Professor Liang Qiming took advantage of the dark environment and pretended to step on the air without paying attention to it, so that he would leave these half footprints on the inner wall.

"Let's go up!" Guo Zhan said.

Then he took the lead and stepped on the ladder without Xiao Hei's lead now. He didn't know if there would be unknown danger outside, so he walked first.

Xia Rufei didn't snatch him, so he waited at the bottom of the well with Tian Feilong.

After Guo Zhan climbed up, he pushed the manhole cover into a gap, observed carefully, and then pushed the manhole cover away and climbed up quickly.

After a moment, Guo Zhan leaned in and made a safe gesture to Xia Rufei and Tian Feilong.

Xia Ruofei immediately hugged Xiao Hei and went up the ladder, while Tian Feilong followed closely behind.

Soon all three of them came to the ground, and Xia Rufei quickly observed the surrounding environment.

This sewer entrance is located on a quiet forest road, far away from various teaching buildings and laboratories. There are definitely not many people passing by here.
To be continued...