The underground waterways in S City are far worse than imagined, not to mention the smell of fishy smell, the key is that many passages are silted, which virtually increases the difficulty of passing through them.

"Whoosh !!"

From time to time, mutant rats attacked from various dark corners, culling Zhang Chengzhong and others, making everyone's nerves always highly tense.

"Boss Yu, I originally thought that it was terrifying enough that there were so many mutant rats in the seventh dormitory building, but now I found that the underground waterway is the real rat's nest!" Zhang Chengzhong was at the forefront, acting as a meat shield to attract firepower while also being responsible for opening the way, which can be described as miserable.

Hearing this, the corners of Zhang Yu's mouth curled slightly, and he directly ignored Zhang Chengzhong's small complaints, unlike in the past, this time Zhang Yu hung at the back of the team, without the slightest intention of making a move, but transferred all the pressure to Zhang Chengzhong and others.

Because Zhang Yu found that except for him and Li Xunhuan, the strength of the others in the team was a little weak, and the evolution speed was far less than that of Xie Dong and Li Yu and others, and the reason was that they still had less tempering or life and death challenges.

This has a lot to do with the relatively safe campus environment, and now that they have left the campus, it is time for Zhang Chengzhong and others to undergo greater hardship.

Zhang Yu knew very well in his heart that now was just the beginning, even if there was no shadow hand, they would have conflicts with other teams in the future, Zhang Yu didn't want every time a team battle broke out, the people on his side would be weaker than the enemy, and then become a burden.

A truly elite team! Everyone must be able to take charge of themselves!

This is Zhang Yu's original intention to form a team, if he has a bunch of burdens and no help for himself, then he might as well do it alone, and it will be more relaxed.

"This advance is too slow, you have to speed up, don't forget my previous goal, to arrive at the Civic Square within one day!" With such a purpose in mind, Zhang Yu urged at the right time to increase the difficulty again.

Hearing this, Zhang Chengzhong's expression became more and more bitter, but after a small complaint, they concentrated on the battle, and they had already realized the fact that their strength was weak.

If it was on campus, with their strength of the fourth order of red crystal, they would already be considered strong, but after leaving the campus, the enemies they encountered were all red crystal fifth order without exception, which couldn't help but bring them great excitement.

Even Ah Fei didn't hide anymore, holding a war knife that was scavenged from Li Yu and the others, and slashed at those mutant rats from time to time, wanting to get as many blood crystals as possible to strengthen his body functions and improve his strength.

Without Zhang Yu's help, and maintaining a fast enough speed of advancement, Zhang Chengzhong and the others fought extremely hard, the only thing to be thankful for was that the mutant rats in the underground waterways were flooded, and the other mutant creatures seemed to have been wiped out by those mutant rats, so they basically only needed to focus on dealing with those mutant rats, and with the combat experience of the No. 7 dormitory building before, they still had a lot of combat experience when facing the mutant rats.

"Boss Yu, the mutant rat king!" But after seeing a blood-red mutant rat in front of them, Zhang Chengzhong and the others suddenly changed their expressions, screamed loudly, and turned their heads to look at Zhang Yu, and what made them extremely stunned was that like them, Zhang Yu also turned around, just one step across, intentionally or unintentionally protecting Xiao Hua, who had lost both arms.

"The mutant rat king won't make a move?!" Zhang Chengzhong swallowed a mouthful of saliva with difficulty, he didn't expect Zhang Yu to be so resolute, and he completely forced them into a desperate situation at once, and without allowing them to think too much, the mutant rat king had already launched an attack.

"Yuzi, isn't it a little too much?" Xiao Hua couldn't help but say with some concern.

The horror of the mutant rat king is still fresh in people's memories, thinking that if it wasn't for Zhang Yu's strong attack, they would not have been able to kill the mutant rat king.

"It's not play, and I won't make a move unless they're all dead. Zhang Yu's face was full of coldness, and he responded lightly.

Compared to when he was in the seventh dormitory building, Zhang Chengzhong's strength has been greatly improved, Zhang Chengzhong has also obtained a soldier seed, and Li Xunhuan is the strength of the fifth order of red crystal, if this can't deal with a mutant rat king, then there is nothing to say.

"The speed of the mutant rat king is too fast, don't disperse, everyone enter Zhang Chengzhong's energy shield!"

"Zhang Chengzhong, I know you're afraid of death, but you have to believe in your own strength, with your current double defense, even the mutant rat king can't break the defense, so the task of attracting firepower will be handed over to you!"

"Li Xunhuan, the task of killing that mutant rat king is entrusted to you, haven't you been unconvinced, and you want to catch up with the captain's pace?

"And Ah Fei, I don't care where you hide, but you listen to me, if you don't show up, then all your loot before will be deprived!"

Kite Xiaobei reacted extremely quickly, and after realizing Zhang Yu's resolute attitude, he immediately issued a series of battle orders, and successfully blocked the first wave of attacks of the mutant rat king.

Seeing this, Zhang Chengzhong, who was originally a little panicked, suddenly boosted his morale, and fought fiercely with the mutant rat king, especially Li Xunhuan was even more crazy, and his attack was extremely fierce, and it seemed that he was really stimulated by Kite Xiaobei's words.

Even Ah Fei saw the opportunity, broke the hidden blow, and slashed the mutant rat king, although he immediately hid again, but at least it had changed.

The battle was extremely tragic, Zhang Chengzhong and others hung up their colors, especially under the terrifying move of the mutant rat king, Zhang Chengzhong, who was at the forefront, became a hedgehog again, extremely miserable, but in the end, Zhang Chengzhong and others still had the last laugh, and killed the mutant rat king dangerously.

"Huazi, see it, this is how people's combat potential is tapped!" Zhang Yu smiled and patted Xiao Hua's shoulder, and then walked to Zhang Chengzhong, who collapsed to the ground, and clapped his hands: "Good job! All the loot is yours, give you another hour to rest." ”

The mutant rat king is extremely domineering, although the underground waterway is flooded with rats, but the area where this mutant rat king is located, there should be no mutant rats intruding in a short period of time, but it is a good place to rest.

Zhang Yu's eyes flickered slightly, and he also found a corner to sit down and entered the state of "meditation".