Unbeknownst to Ron, who left angrily, as he turned to leave, a creature the size of a tenth of a grain of rice attached to the corner of his coat, releasing radio signals from a certain frequency band like a transmitter.

Hogu can use this signal to track down the Seren.

There was no doubt that the Seren, named Ron, was a fool who didn't even understand the three laws of thermodynamics, and he made a lot of nonsense about creating a perpetual motion machine, just like the other lower-class Serenes, and Hogu thought so at first.

But it soon noticed that there were hidden people watching the area further away from the crowd.

They hid well, but it was too obvious to the Serens in the eyes of Hogu, who had adjusted both concealment and anti-concealment to the maximum.

At that time, Huogu's first reaction was to be vigilant, wondering if his own affairs had been revealed.

However, it soon noticed that there were two groups of people who were hiding and spying on them, because there was a gap between their levels of concealment, and one group of people was spying on this place and the other group was also watching here.

And the low-level monitors are at a loss to know about the fact that they are being monitored, and they carry out the surveillance work step by step.

This dispelled Hogu's concerns, because if the Serens knew about its entry into the Great Library, it should not have been divided into two groups, even if it was for surveillance, that is, it was not for it, and it had not been exposed.

But not against Hogu, and against whom?

From the sight of these monitors, Hogu could easily tell that they were watching the two main culprits who caused the congestion at the entrance of the Great Library, or more precisely, the Seren named Ron.

This strange situation made Hogu wonder, if you want to spy on anyone present except Ron, Hogu can understand it, even if you haven't heard of it between the people of Seline, you can guess it to some extent, but what's the point of spying on a Seren like Ron who doesn't learn and doesn't know how to do it?

At first, this question was just a small doubt, but after thinking about it, the more Huo Gu thought about it, the more he cared about it, and it seemed that the signs were pointing to the 'perpetual motion machine research' that Ron mentioned many times.

Could it be that this guy really has the confidence to develop a perpetual motion machine?

As soon as this idea came up, Huo Gu felt that his three views and IQ had been seriously insulted - perpetual motion machines are inseparable from energy, and thermodynamics is the cosmic law that interprets energy and matter, even if there really exists a perpetual motion machine, it cannot be developed by this guy who can't even say the three laws of thermodynamics.

In short, it's a phrase: 'Is he worthy?' ’

Although he thought it was psychologically impossible, thinking of these two groups of stalkers, and then thinking of the eloquent words of the Seren man named Ron, Hogu couldn't make up his mind and decided to take a look at this guy's research first, no matter what, what it was like.

"When we act like this, the gap between the two groups of people is even more obvious."

Hogu was the third group of trackers, spying on Ron as well as the other two groups of trackers, the low stalkers didn't notice that they were being followed, and the tracking methods didn't seem to be very clever, after Ron boarded the moving disc and entered the access pipe, they followed closely behind, and also entered the access pipe.

In comparison, the high stalkers are much more alert, and it is clear that Huo Gu is sure that he has not shown any horses, but this group of people seems to be prescient, always scanning the people or things around them from time to time, and occasionally locking on Huo Gu himself.

But who is Huogu, it randomly found a corner, changed its appearance and clothing, and even the smell on its body, and even its gender and age, and then continued to follow.

After Ron and the Low Stalker entered the wayway, the High Stalker was more clever and called a flying car and used it to track.

And Huo Gu found a relatively hidden place, drilled into the ground, transformed into a long strip, shaped like an earthworm's life structure, tracking underground, as long as you pay attention to dodging the various underground cables and other things laid by the Seren, in fact, it is no different from driving a flying car in the sky to track, although there is resistance underground, but the movement speed of Ron in the passage pipe will not be ridiculously fast, so it is enough.

Three groups of stalkers followed Ron to his residence, a large villa on the lower level.

Ron entered the residence, but the two groups stopped outside, just in case something unexpected happened, and Hogu stopped as well.

The two groups of people on the ground stayed in place like this, and after waiting for a while, seeing that nothing had changed, Huo Gu was a little impatient - your time is not valuable, but my time is still valuable!

Immediately, two tentacles branched out, carefully breaking through the soles of the feet of the two groups of trackers, the first to break through the ground was the side of the high tracker.

"Captain, it's not a matter if it goes on like this, in my opinion, I will rush over and arrest these people......"

"Quiet, the instructions from the peak are for us to follow, don't do superfluous things, please, now it's hard to find some clues, in case this time it's also broken, can you conjure up new clues?"

"But if we simply follow like this, we may also cut off clues, didn't you apply for arrest instructions with Shangfeng?"

"It's been done, Shangfeng's reply is to let us continue the mission, in order to track us have unloaded too much equipment, the combat effectiveness has dropped very seriously, Shangfeng must be foolproof, so the task of arresting is handed over to other teams to perform."

"Understood."

The team members who have the bottom in their hearts no longer speak, and the high-level trackers with targets are like lurking pit vipers, and even their breath is hidden in the background of the environment.

"This kind of skill is too superb, to reach this level, it is also one of the few in the Seline Empire, and I am afraid that only those soldiers can match it......"

“…… Wait, could it be that this group of high-level trackers is the soldier king team of the Seren?! ”

Huo Gu was stunned for a moment, and his heart was instantly shocked, according to the situation of the empire introduced to it by Tien, the Bingwang Fan Team is the highest combat unit directly under the military, that is to say, it is the Emperor ** Fang who is carrying out military tasks, and it is a difficult task that needs to be handled by the Bingwang Fan Team.

"It's getting more and more interesting, but what about the group on the other side?"

With this in mind, Hogu eavesdropped on the Low Stalker.

"Can a perpetual motion machine still be developed without that guy?"

"This ...... What does the head mean? ”

"It's too flamboyant, I can't keep it, and the head is already a little unhappy."

"That's the trouble, it's too hard to find a guy like this guy who is stubborn enough, self-righteous enough, self-centered enough, and thinks he has the truth, and it took so long to find this one, and it is impossible to develop a perpetual motion machine without these conditions."