After resting on the bank of the underground river for a whole day, Sun Heng asked a group of Maoren warriors to pack up and prepare to explore the underground space where the underground river was located.

At this time, there were 149 people in the entire team, including Sun Heng, and after a day of repair, the minor injuries were completely recovered, and most of the moderately injured were recovered to the level of minor injuries, and the seriously injured died because they could not get effective medical treatment and the continuous hard work, and although the rest still had no combat effectiveness, they stabilized their injuries and finally saved their lives.

The damage rate is so low, in addition to the strong physique of the Mao people, it is also inseparable from the red pith brew provided by Sun Heng and the hunted fourth-level strength octopus monster, so the surviving Mao warriors at this time are sincerely grateful to Sun Heng.

After some statistics, there are 72 Maoren warriors who can fight in this team now, and the overall combat effectiveness has increased a lot compared to before.

Sun Heng organized these 72 people into two teams, each team of 36 people, one team was led by himself, and the other team was led by the ten-division commander of the sentry battalion who had contributed more along the way and performed quite well.

The ten-captain of the sentry camp is named Yunling Iron Baboon, and he is a member of the Iron Baboon tribe affiliated with the Green Lion Tribe.

In addition, Sun Heng also selected two fourth-level hairy warriors of the Leo tribe to serve as deputies for the Yunling Iron Baboon. One is a centurion of the war camp, called the Leo of the Horizontal Plateau; The other is the ten-captain of the sentinel camp, called Tielai Leo.

As for the remaining 77 Maoren, they had no combat effectiveness for the time being, and were organized into a wounded team by Sun Heng, and appointed a centurion of the war camp named Tongyuan Qingshi as the captain to facilitate unified management.

After the three teams were all rectified, Sun Heng said to the Maoren soldiers of the second team, such as Yunling Iron Baboon, Hengyuan, and Tielai: "Later, we will explore along the underground river on both sides, I will go downstream, and you will go upstream." Remember, no matter what the outcome is, after five miles out of here, you have to come back. ”

"Honorable Order!"

Yunling Iron Baboon and the others answered, and then led more than 30 people from the second team to the upper reaches of the underground river.

The reason for this distribution is because Sun Heng feels that the underground river should be more and more narrow upstream and will be safer. The lower reaches of the underground river will be wider and deeper, and there is a greater chance that monsters will lurk.

After the second team left, the Maoren soldiers of the first team were ready to set off upstream after Sun Heng's order, but Sun Heng ordered: "Second team, everyone except me stays here to protect the wounded and sick team!" Stone? Leo, Leo, Heyan Leo, you have to take on the responsibility of vice-captain when I am away! ”

"Honorable Order."

Although everyone in the second team obeyed the order, they were weak, and they were obviously not satisfied with the task of protecting the sick and wounded team.

Sun Heng didn't say much, and walked briskly downstream alone with a big sword.

Although he could return to the surface the same way, Sun Heng wanted to explore this underground space. Because, if the ground of the Ruyin Demon Domain is occupied by monsters, then a complex underground space will be a good second battlefield.

Walking all the way along the underground river, Sun Heng found that although the width of the underground river had not increased much, the depth had gradually increased from more than one zhang to two zhang.

At the same time, he has been paying attention to the scene in the river with his perception, and has "seen" a few octopus monsters, as well as some other creatures, such as fish, shrimp, snakes, turtles, etc., but none of them are normal, either mutated, or strengthened and enlarged.

These monsters form a chain of creatures in the underground river, which is very fragile and can be easily destroyed. Among them, the octopus monster is the only monster that can threaten him. It was not enough that these octopus monsters in the back might have sensed his danger and did not take the initiative to attack, so Sun Heng was too lazy to deal with them.

After walking about five miles along the underground river, Sun Heng did not make any other important discoveries except for a few natural underground caves. Sun Heng felt that his speed must be faster than that of the second team, so after thinking about it, he continued to walk forward for another mile, and it was the extra mile that he walked out of, which made him make a major discovery.

Ahead, the surface of the underground river, which was originally only more than 20 meters wide, suddenly became wider, forming an underground lake with a radius of more than 100 meters. As for the depth, it hasn't changed much, but it has changed from more than two zhang to more than three zhang.

Surprisingly, the rocky layers above this underground lake hang down so many roots that stick into the water. And in the water, many monsters are gnawing on the roots, and every time a root is broken, it will bloom bright red, as if blood is flowing out.

In fact, the entire underground lake is blood-red!

Sun Heng not only looked up and looked up along those roots, but at the same time, his perception also probed.

He found that a considerable part of the space above the underground lake was rocky, but now the rock layer had been broken by these roots and had become full of holes. Further up is the fertile soil, with thicker roots and more dense cloth.

As for the upper places, Sun Heng's perception could not be detected.

Although he couldn't get a glimpse of the full face of this plant, Sun Heng had a hunch: the main body of these roots was by no means simple, and it was likely to be a mutated plant similar to a ghost vine. And to be able to grow to this size, I'm afraid the predation method is very powerful.

Crossing this underground lake, the underground space in front of it is blocked by the collapsed rocks, and it has become a dead end.

So Sun Heng had to go back.

Returning to the place where the injured team and the other hairy people of the second team were, Sun Heng found that the people of the first team had already returned, and they also brought a human back!

Yes, neither a hairy nor a blue-blooded, but an earthly human!

"Commander, we've caught this earthling more than five miles upstream! Plus, we found several caves there! I guess this earthlings must have come here through the cave! Yunling Iron Baboon said to Sun Heng quite excitedly.

Obviously, he also understood how important the information he had uncovered was.

Sun Heng looked at the captured earthlings and found that the other party was actually an awakened person, and when he was twisted by a hairy warrior, he couldn't stop struggling, and even stimulated his bloodline, and the phantom of the dragon was reflected behind him!

It's a pity that this young man is only the strength of the late second stage, and the hairy warrior who twisted him is the middle of the third level. Even if the young people stimulate the blood, they can't break free.

In addition, Sun Heng also noticed that this young man's face was relatively pale, not the kind that lacked blood, but the kind that did not see the sun all year round.

With a move in his heart, Sun Heng asked in Mandarin: "Say, how did you appear here!" ”

It was probably the first time he heard Mao Ren speak Mandarin, and the young awakened man was stunned, and then he stiffened his neck and said: "I came here randomly, and it's useless for you to arrest me!" ”

Sun Heng was stunned for a moment when he heard this, and then couldn't help laughing.

He could see that this young awakened person was a little clever, but after all, he was too young to know that he had already confided an important message in his words...

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