The scale of the second Mud City investigation was unprecedented, with the number of people reaching nearly 6,000.

The operation was divided into three units.

The first team is the main battle force composed mainly of military personnel and supplemented by practitioners.

The main task of this team is to advance to the center of the mud city and eliminate the bat gargoyles along the way, thereby rescuing the petrified humans.

The commander-in-chief of the first team is naturally the top military general, General Liu.

The second team is a supply point construction unit based on the Supernatural Bureau and supplemented by the army.

The task of this team is to build oxygen supply points and at the same time protect these supply points.

The commander-in-chief of this team is Mr. Midu Sammi.

The oxygen supply point plays a very important role in this combat operation because only enough oxygen can support everyone's actions.

This oxygen is as essential as three meals a day.

The amount of oxygen that can support five thousand people is obviously a huge project.

This requires perfect coordination both inside and outside the mud city to support the oxygen supply for everyone.

The third team is the rescue team led by Mr. Mu.

Specially responsible for rescuing the trapped Wudang leader Zhang Chongguang.

Of course, the number of people in this team is much smaller than other troops.

There are only less than ten people.

After all, it is not enough to use too many resources to save one person, even if the other person is a respected senior.

So this rescue team is considered a self-organized team.

The people inside are basically Wudang disciples.

…

"Xiao Xuwen, there is no need for you to follow."

"The enemies in this inner circle are more terrifying than you imagine."

"And there is no oxygen supply in the inner circle. Once you fall into a combat state, your oxygen supply may be delayed."

"You haven't mastered the method of fetal breath yet, so you can't support it at all."

"The oxygen in our bodies is enough for us to breathe for ten and a half days, but for you, it can only last for five hours."

When Mr. Mu saw that Xu Wen wanted to go with him, he persuaded him.

Xu Wen finally understood why Mr. Mu and the others were able to persist for so long in the mud city covered in petrified mist with only a little bit of oxygen last time.

It turns out that these big guys have mastered the method of fetal breath.

The rate at which they consume oxygen is much lower than that of ordinary people.

It's like the fetus breathing in the mother's womb.

However, Xu Wen has not yet cultivated to that level.

Fetal Breath is a power that can only be mastered by masters in the Alchemy Realm.

As long as you master the fetal breath, you can breathe in water for several hours with just one breath.

For a moment, Xu Wen suddenly felt envious of such an ability.

Sure enough, there is no end to learning, and Xu Wen still has a lot to learn.

Li Qingfeng on the side also recognized Mr. Mu’s words.

"Junior brother, Mr. Mu is right."

"I'm afraid it won't be that easy to rescue Master this time."

"Your oxygen reserves are insufficient. I'm afraid you won't be able to last long if we go together."

"So you meet us outside. Once we rescue the master, we will meet you as soon as possible."

Other senior brothers also tried to persuade Xu Wen.

Although they all knew that Xu Wen was the one who wanted to get in the most.

However, the situation is special. Although Xu Wen has the form of a night baby, he can fight with the help of the night baby's power.

But Xu Wen's own body was made of flesh and blood after all, and his mortal body was simply not strong enough to resist this petrified mist.

So Xu Wen was definitely not allowed to follow.

"In that case, I won't be a burden."

"Mr. Mu, and fellow senior brothers, Lao Zhang is leaving it to you."

After all, Xu Wen was unable to participate in the mission of rescuing Zhang Chongguang.

"Junior brother, be rest assured, we will definitely save the old man."

"Let's go!"

After saying that, everyone flew away and disappeared into the thick gray mist.

After Mr. Mu and the others left, Xu Wen turned around and looked at Mr. Mi.

This time Mr. Mi did not join the rescue team.

His main task is to lead the construction and protection of oxygen supply points.

"Boy, just follow me to establish a new oxygen supply point."

"After all, you are the chief planner of this oxygen supply point."

After Xu Wen heard this, he did not refuse Mr. Mi's request.

He is indeed the designer of oxygen supply points, and each point is set after careful consideration.

There should not be too many oxygen supply points. If there are too many, it will easily lead to a waste of resources, and the number of troops that need to be guarded will also increase.

But it cannot be too little. If it is too little, many soldiers may not be replenished in time.

It cannot be too dense, as that would be detrimental to the expansion of the entire search network.

It cannot be too sparse, otherwise the search network will be too large and there will be no time to support it.

In short, Xu Wen used his usual cautious attitude and meticulous reasoning to figure out the settings of the entire oxygen supply point.

And each oxygen supply point is guarded by a powerful practitioner.

In this way, even if there is an attack by a bat gargoyle, the oxygen can be protected.

…

Xu Wen, who joined the oxygen supply point construction team, led a small team to one of the supply points he planned.

This supply point is on the bridge. It is also an important supply point.

Responsible for the supply of investigators connecting the two sides of the Taiwan Strait.

When Xu Wen led his team to Nihe Bridge, he suddenly felt an inexplicable nervousness.

Xu Wen immediately raised his hand and stopped the team.

"Wait a minute, let's investigate first."

Xu Wen sent two investigators to investigate the Nihe Bridge.

Not long after, a report came over the communication machine.

"Team Xu, there is something on the bridge."

"Why so many?"

After hearing this, Xu Wen immediately followed with the remaining people.

When they came to the bridge, one of the investigators gave Xu Wen the infrared reconnaissance device in his hand.

Xu Wen took a closer look and was shocked to find that the display screen of the infrared detector showed that there were huge bats hanging upside down under the Nihe Bridge.

Seeing this scene, Xu Wen frowned immediately.

"Is this a gargoyle lair?"

Xu Wen was surprised. This was obviously beyond his expectation.

He didn't expect that there were so many bat demons hanging on the bridge.

Through the hazy fog, Xu Wen could vaguely see that there were indeed huge bats hanging on the Nihe Bridge.

These bats seemed to be sleeping and did not notice Xu Wen and them.

Xu Wen counted carefully and found that the number of these bats reached twenty or thirty.

There were only twenty or thirty people in their team. Facing these twenty or thirty bat monsters, everyone felt great pressure.

So, what to do now?

"It's about moving forward and establishing an oxygen supply point on the bridge."

"Or give up this point and build a new supply point elsewhere?"

This problem has obviously become a problem that Xu Wen must solve.
Chapter completed!