Yang Cheng and Yu Jia performed an earth escape technique, and their figures disappeared to the ground, heading towards the arsenal they had previously identified by earthworm methods.

As soon as the two of them approached the arsenal, a piercing alarm suddenly sounded in District 51!

Yang Cheng and Yu Jia glanced at each other, then sped up and went in the other direction, without entering the arsenal.

Ryker and Kaio heard the screeching sirens in their ears and looked at the thermal images in front of them, their faces suddenly turned ugly.

Lake roared at a soldier next to him, "Who activated the alarm system?!"

Everyone looked at each other, not knowing what to say, a soldier in front of the computer stood up, lowered his head and said cautiously: "Report, report, Lieutenant Colonel Lake, didn't you say that you want to shut down all the defenses and alarms in the base......."

When he said this, he peeked at Lake, and still whispered: "There was an external virus invasion just now, I, I didn't open the firewall." ”

Lake was stunned when he heard this, but when Kaio heard this, he was furious, jumped up from his chair, came to the American soldier, grabbed him by the collar, pulled him close to him, stared at him and said, "Do you know how much we cost this time?! You know what?! Damn, we just asked you to turn off the defense of the base, did we say that you should turn off the defense of the computer!"

"I, I, I ....." The soldier looked at Kaio, whose eyes were flashing with red light, his face was pale and at a loss.

"What are you, bastard!" Kaio raised his hand and was about to slap the soldier in front of him, but as soon as his arm was raised, a powerful hand grabbed his wrist.

"Brother, let go, let me give this kid a slap. ”

Lake didn't let go, but said, "We gave the order, you don't blame him." ”

Kaio let go of the hand that grabbed the soldier of the United States, took a few deep breaths, looked at Lake and said, "What should we do next?"

Lake gave the soldier a look and motioned for him to leave, then he patted Kaio on the shoulder and said, "It's okay, there are only two of them, I don't believe they can turn the sky around." ”

After Yang Cheng and the others bypassed the arsenal, they continued to go to the center of District 51, and walked a distance underground, Yu Jia's expression suddenly moved, and he said to Yang Cheng beside him: "Brother Yang Cheng, how do I feel that there is something underground?"

"Oh, there's something?" Yang Cheng also looked moved, and said, "Could it be that we have arrived at the underground base area of District 51?"

"I don't know. Yujia shook her head.

"Since that's the case........" Yang Cheng touched his chin and said, "Let's go a little further, maybe there will be an unexpected gain." ”

Yu Jia didn't mean to object, so the two of them used the Earth Escape Technique again and continued to go down.

The two of them longed to descend for about ten meters, and when they saw that they were about to reach the limit of their current realm, Yang Cheng paused slightly, as if he had picked something, he released his divine sense to check it, and found that there was actually an iron plate under his feet, and this iron plate was very peculiar, even his divine sense could not pass through.

"It's over so soon?" Yang Cheng's eyes flashed with surprise, he tilted his waist and reached out to knock, and couldn't help but be surprised: "It's quite thick." ”

Yu Jia stood beside Yang Cheng, breathing a little uncomfortably, and said, "Brother Yang Cheng, are we going back now that there is no way?"

Yang Cheng smiled, summoned Tianyang, looked at Yu Jia and said, "There is no way in this world, but we can open the way." ”

After Yang Cheng finished speaking, he raised Tianyang and slashed at the ground.

"Ding, Dang ......"

Tianyang and the iron on the ground came into close contact, Yang Cheng changed Tianyang in his left hand, looked down at the tiger's mouth in his right hand, where there was a wisp of red blood, he kicked the iron plate under his feet, and said with a wry smile: "I don't know what material this iron is made of, it actually cracked my tiger's mouth, fortunately, Tianyang is not ordinary, if it is an ordinary sword, it will definitely be broken." ”

Yu Jia stepped forward, took out the gauze from the illusion ring, bandaged Yang Cheng's right hand briefly, and then she retreated.

Yu Jia is not as good as Yang Cheng, and she has the experience of breathing underground, this is the first time she has come to such a deep underground, so it seems a little difficult.

"Little girl, I think you should go to the illusion ring, the pressure here is a bit big. Yang Cheng looked at Yu Jia, whose face was flushed due to poor breathing, and felt a little distressed in his heart.

"No, if I can't get over this, I'll be scared in the future, so I have to persevere. Yu Jia shook her head and sent a message to Yang Cheng, her tone was very resolute.

"Okay......"

Yang Cheng shook his head helplessly, and then he fought with the iron plate under his feet a few times, but it was still to no avail.

"Brother Yang Cheng, why don't you ask Xiao Jin, maybe it has a way. Yujia's pretty face was still a little red, but it was much better than before, and as time passed, she had mastered the rhythm of breathing underground a little.

"yes, how did I forget it. Yang Cheng patted his head, and then he used his mind to communicate with Xiao Jin in the Dragon Emperor Ding.

A moment later, Yang Cheng's eyes flashed, and with a flick of his fingers, a wisp of white flame jumped out of his fingertips and landed on the ground.

"......"

Under the surprised gaze of Yang Cheng and Yu Jia, the piece of iron under his feet, which even Tianyang could not shake, actually began to slowly melt under the scorching white flame.

"This fire is so powerful. Yu Jia couldn't help but admire.

Yang Cheng smiled bitterly: "Awesome is awesome, it's just a bit of a waste of true qi." The True Qi in his body had already consumed one-tenth of it in just a moment.

You must know that Yang Cheng's body is liquid true qi, and these true qi can allow him to stay more than ten meters underground for ten days.

Yu Jia rolled her eyes and said, "You want the horse to run and don't give the horse grass, how can there be such a good thing in the world." ”

"I'm just talking. Yang Cheng touched his head and smiled.

The white flame burned for about ten minutes, and it sank down for almost ten meters, but it still didn't come to an end, Yang Cheng frowned secretly, and planned to forget it like this, because the true qi in his body had already consumed thirty percent, if it was still like this, if there was any danger below, would he let Yu Jia hold it alone?

When Yang Cheng was about to withdraw the white flame, Yu Jia's surprised voice sounded: "Brother Yang Cheng, it's through, it's through!"

Yang Cheng breathed a sigh of relief, his mind moved slightly, and he withdrew the white flame, and then he widened the hole where the white flame boiled wider, and then jumped down with Yu Jia........