"Knock knock!"

A strange sound suddenly sounded from behind, Guan Yun was suddenly startled, and hurriedly looked back, but found nothing, only the dark cave underground.

", Brother Yun, did you hear any sound!!" Zhou Liang on the side was also taken aback, and hurriedly turned his head back.

"Well, I heard you!!" Guan Yun searched around the torches, and at the same time, his spiritual power quickly spread out, trying to find out the source of the strange noise.

Zhou Liang, who was on the side, also looked at the direction where the voice came from vigilantly, in case something unexpected suddenly happened.

Zhang Xiaolong and Guan Lei, who were walking in the front, heard the two movements, and looked at the two suspiciously: "What sound?"

"Hmm, didn't you hear the strange sound just now?" Zhou Liang glanced at the two of them and found the confusion on their faces.

"What sound? We didn't hear anything? Didn't you hear it wrong? Guan Lei listened carefully, the cave was very silent, and there was no sound, but Zhou Liang's nervous and vigilant expression didn't look like a lie.

"No, no, I heard it right, Brother Yun also heard it, right, Brother Yun. Zhou Liang looked at Guan Yun and found that Guan Yun had also clearly heard something, and he was testing the spiritual power in the dark cave behind him.

"Daddy, Xiaolong, didn't you hear any sound, it seems to be coming from the cave!" Guan Yun looked at the two people behind him and found that neither of them heard any sound.

"Could it be the echo of the torch I threw down? Guan Lei thought about it, it seemed that there was only a torch he threw at the bottom of the cave, and they really didn't hear a response just now.

"Echo?" Guan Yun turned his head to look at Zhou Liang, and found that Zhou Liang was also puzzled, even if it was an echo, it wouldn't take so long to come, and the sound just now was not like the sound of a torch falling to the ground at all, but more like...

"Knock knock!"

"Brother Yun, did you hear it, it sounded again, it was definitely not an echo!!" The clear voice, Guan Yun and Zhou Liang heard it more realistically this time, as if it sounded in their ears.

"I heard it!!, like a heartbeat!! both of them heard it, and Guan Yun was even more convinced that he had heard this voice correctly.

"Godfather, didn't you hear it, such a loud voice!!" Guan Lei and Zhang Xiaolong didn't hear it just now, Zhou Liang and the others walked too far ahead, and they didn't pay attention to the changes behind them, they should have heard it this time.

"What sound, what are you ?!!" Guan Lei was even more puzzled, the reaction of these two stinkers was obviously not pretending, what kind of voice was it?

"Yes, Guanyun, I really didn't hear anything. Zhang Xiaolong couldn't help but say, his hearing was fine, and several people were so close, there was no reason why they could hear it, but he couldn't hear it.

"What's going on? Looks like just the two of us can hear it. Guan Yun glanced at Zhou Liang, it seems that Dad and Zhang Xiaolong really didn't hear any sound, is it the hell? There are really undead at the bottom of the cave?!!

"Something is wrong, a little heart. ”

Guan Yun absolutely didn't believe that this voice was only heard by him and Zhou Liang for no reason, what was it in this mysterious cave that was attracting them?

"Wang!"

"Whew!"

The two beasts that had been in Guanyun's backpack suddenly turned over and jumped out, and their spiritual power surged rapidly, turning into a huge body, running to the edge of the Lin Cave, and looking at the bottom of the cave.

Then the two beasts looked at each other a few times, and kept humming, as if they were communicating something...

"Dog, Shi Duo, what did you find?" Guan Yun looked at the strange reactions of the two beasts, and also walked over, looking towards the bottom of the cave they had been staring at, to see if there was something he had ignored.

"Nothing... !!"

Guan Yun was standing at the entrance of the cave and poking his head out, but he didn't expect the dog to turn his head suddenly, slam it behind Guan Yun's buttocks, and directly pushed Guan Yun down, and a very miserable scream continued to weaken from the hole.

", Brother Yun!!, it's a dead deal!! "After seeing Guan Yun being pushed into the hole by the dog's egg, Zhou Liang immediately panicked, if he fell down from such a high place, he would definitely die!!

"Eh,, why are you two looking at me like this?!!" Zhou Liang suddenly noticed that Dog Dan and Shi Urine were moving towards him, and their eyes were full of evil.

Goudan and Shi Urine Duo glanced at each other, only to see Dog Egg dodge, rushed to Zhou Liang's back, and slammed it again, pushing Zhou Liang onto Shi Urine Duo's back, and then Shi Urine Duo actually carried Zhou Liang on his back and jumped towards the cave!!

Goudan glanced at the two people and one beast who went down one after another, turned his head and whined strangely at Zhang Xiaolong and Guan Lei twice, and also jumped into the bottomless hole.

"Stinky !!" Everything that appeared was too sudden, and by the time Guan Lei reacted, the two of them and the two beasts had already jumped into the cave.

Guan Lei, who was extremely anxious, immediately wanted to jump down the hole to save Guan Yun and Zhou Liang, but was dragged by Zhang Xiaolong: "Uncle Lei, wait a minute!! Guan Yun and those two beasts I know will not harm the two of them, let's not worry about !! first."

Goudan and Shi Muduo are very spiritual, Zhang Xiaolong has almost never seen such a war beast, and Goudan whispered to them, he must be trying to convey something to them.

"In such a deep cave, you will definitely die if you jump down!! "How can Guan Lei not be in a hurry, in such a deep cave, there is only half a breath left if you jump down and not die."

"Uncle Lei!!Don't worry, the war beast of Guanyun just now should just want us not to panic, since we can take Guanyun down the cave, it is clear that it is sure that it will not be able to go to Guanyun, let's wait for a while." Zhang Xiaolong dragged Guan Lei and was busy explaining his thoughts.

Guan Lei listened to Zhang Xiaolong's words, it took a long time to calm down, and only after stabilizing his mind did he realize that something was wrong, after the two of them and the two beasts jumped down, there was no very heavy sound of landing, according to such a quiet and narrow cave, if a needle fell, it would amplify a very loud sound, and they didn't even make any sound until now.

"Are you, those two war beasts, did you deliberately let the two of them go down the cave?" After Guan Lei calmed down, he thought about it carefully, when those two beasts faced the attack of the Sea Clan with them, they almost desperately tried their best to protect Guan Yun, and there was no reason to harm their master, it may be really like Zhang Xiaolong's, there is some special reason.

Zhang Xiaolong nodded and said, "Just now, the two of them obviously heard some strange sound, and then those two beasts will have such a strange movement, there must be something under the cave, let's wait patiently first." ”