"We will investigate what the keys are for then."

"Yes." Guan Heng nodded. At this moment, the sound transmission puppet insect on his body suddenly roared.

He took out this object and put it in his ears. Qing Huang's voice came from the opposite side. Guan Heng heard a few words and then said, "Let's go, everyone has come out of the stone cave and is waiting for us to go back."

...

After a while, outside the fan-shaped stone cave group.

"Aheng, look." Qing Huang saw Guan Heng and the others coming out, immediately walked up and handed over two things. She said, "This is what my sister and I found in the box in the cave. Two keys, one is purple and the other is blue."

"So, the keys of seven colors of red, orange, yellow, green, green, blue, and purple have been collected." Guan Heng took out the other few, and Yan Xin came over and said, "I don't know what these keys are turned on."

"Maybe we'll be able to figure it out soon." As he said that, Guan Heng stepped to the middle area of ​​the fan-shaped stone cave group, then turned his head and said to everyone: "After we got here, we found that there was no way out, right?"

"Yes, I feel quite strange until now." Ruotao said, "And we have not found another new exit in several caves, so we don't know where to go."

"Actually, the road is at our feet. Did you not expect it?"

"Uh?!" Hearing Guan Heng's words, the girls and other companions were a little surprised, and they said in unison: "Is this true? We didn't notice anything."

"I will introduce you to the next path." As he said that, Guan Heng took a few steps forward, then stepped on the ground with his feet, and continued: "Here, it's here, the earth palace toad, try to use Xuan Lingqi to decompose the soil layer here."

"Okay, Mr. Guan."

"Hu——" It was said slowly, and soon, the big toad suddenly spit out a stream of mysterious spiritual energy into the ground that Guan Heng said, "Swish swish swish swish!" In a blink of an eye, the soil around it continued to decompose and disappear.

After a few breaths, a large piece of metal plate appeared on the spot. Qing Huang shouted in a low voice: "How could this happen? Everyone was walking around here just now, but they didn't notice anything unusual."

"At the beginning, I didn't even notice it, let alone you." Guan Heng smiled slightly: "Because the Yinxue area is several feet above the ground, it is difficult to detect? But thanks to the help of someone? I noticed its existence."

"This person is Puxing."

"Ba!" said? Guan Heng gently patted Puxing on the back of the head. He cursed with a smile: "Why are you giggling foolishly? Tell everyone what's going on."

"Uh, yes." Puxing rubbed his head a little embarrassedly? Then he said: "Just just now, you all went into the cave to look for clues. I, the boss of the wolf beast, the crazy poisonous ant queen, were patrolling around here? But at the beginning, I didn't find any difference."

"So I found a place to rest? I just stabbed my spear into the soil and touched the metal plate under the soil. Then I found the clue." Hearing this, Xiao Hei opened his mouth and said, "Oh? It turns out that he is lucky."

"Shh." Seeing the little guy's words unrestrained? Puxing's face turned red, Yan Xin immediately covered the little girl's mouth with her hand and whispered: "Hey, he's already embarrassed enough to save my apprentice."

"Uh? Master, you speak louder..." Puxing muttered: "I seem to be even less respectful in this way, right?"

"The incompetent little apprentice? The master is helping you." As he said that, Yan Xin stamped his feet: "I really don't know the hearts of good people."

"Okay OK? You don't squeeze my poor brother anymore." Guan Heng said and touched Puxing's head and smiled, "Or what if? My girl should feel distressed."

"Brother? Don't change the topic." Anyang said with some amusement and crying: "Talk about the main business first? How to open this large metal plate?"

"Well, let me take a look first..." Guan Heng walked forward and said casually: "There is no place like a keyhole on this metal plate. Obviously, the key in our hands does not apply to it. If that happens, we have to find another way."

"Hey, magic lord, old monkey, you can go up and check it first to see if there are any gaps on the surface of this metal plate."

"Okay, Mr. Guan." The demon lord and the monkey agreed, then jumped onto the metal plate, knocked and beat the slap with their own ice-breaking lords and short sticks, causing the jingle to ring and sparks to burst out. However, after a while, neither of them found a gap.

"Oh, there is nothing." The Demon Shark shook his head at this time, turned his head and said to Guan Heng: "Master Guan, otherwise we can break the metal plate with brute force, so that we can save the effort."

"Oh, I just used my mental power to investigate. The thickness of this metal plate is more than 1 meter. If you can easily break it, you can try it."

"A metal plate more than 100 feet thick?" Hearing this, the demon sucked in his air and thought to himself: "I can easily penetrate such a thick layer of soil. If it were a metal plate, it would not be impossible to use more than 80% of the strength."

"But the chain vibration caused may destroy the surrounding landform structure, and everyone will be buried alive by then." After thinking for a few breaths, the demon shook his head and said, "Oh, although it can be done, I have some concerns, so I'll just forget it."

"Hmph, after all, you are quite cautious, but it's a good thing to be cautious about it." Guan Heng said lightly: "So, using brute force is not a top strategy, but I have a way."

"Oh?" Hearing this, Qing Huang, Yan Xin and the others asked at the same time: "What's the solution?"

"It's very simple. We don't need brute force, we can use 'corrosion'."

"Giant bee, come out." As he said that, Guan Heng snapped his fingers and let the Qinyuan giant bee appear in front of him. Then he said to the King of Golden Swords: "Concentrate all the glimpse of black stings."

"Okay." Hearing this, the King of Jinsai vaguely guessed his plan, so he raised his head and whistled: "Squeak squeak!"

"Buzz buzz!" Hearing the boss's summons, dozens of glittering black stings had flew close to each other. During this period, with the mysterious spiritual energy of the King of Golden Stings, the black stings had evolved to the strength of being no less than the five-colored ferocious stings.

Most importantly, their corrosive mucus is becoming more and more serious, and even solid metals such as cloud-patterned ancient gold can quickly corrode and melt, which is why Guan Heng needs to use them.
Chapter completed!