"Brother Chu Chen, how come there are patterns on the moon core?"

　　 The Little Mermaid Plucking asked curiously.

　　Chu Chen is also curious.

　　 "Irina, have you ever heard of legends about the moon? For example, is there anyone living on the moon?"

　　 Chu Chen looked at Irina.

　　 These patterns on the moon core, in Chu Chen's view, shouldn't be left by the life of the island world.

　　 After all, with such a deep sea, even if the island world has mysterious energy, there are no marine plants at this depth.

　　 There are no marine creatures either.

　　 The ancient species can't come down.

　　 Of course, it is not a complete life forbidden zone, because Chu Chen discovered that there are still some shrimp-like lives below here.

　　 There is a saying, the vitality of shrimp is really tenacious, and the fertility is quite amazing.

　　 There are also many types.

　　 These prawns are not big and can survive in such deep water. These prawns are also quite powerful. If it is not temporarily not taken away, Chu Chen is ready to catch a few of them and go back and study them.

　　.

　　 In addition, the lunar core is made of submarine gold with a considerable density.

　　 looks like a whole.

　　 This level of impact failed to destroy the lunar nucleus, which is enough to show that the lunar nucleus is strong.

　　 Of course, the lunar core has not been destroyed. A big reason is that the outer part of the moon has absorbed a lot of impact and shattered.

　　 There is a buffer.

　　.

　　 It is not easy to engrave these patterns on the seabed gold, not to mention, it still needs to be done underwater at a depth of hundreds of thousands of meters.

　　 These patterns are very regular and regular.

　　 Therefore, Chu Chen felt that these patterns might have been there from the beginning.

　　 He has that problem.

Irina heard Chu Chen’s question, thought for a while, and said, “There are legends in this regard, that is, there may be people on the moon, and those people are like you, with legs. It’s just that these legends don’t know the truth. Fake."

　　 "Don't you know the truth?"

　　 Chu Chen looked at those patterns again.

　　 At this time, he noticed that there seemed to be a keyhole in the middle of the huge door pattern, and around the keyhole, there was a pattern that looked a bit like a six-pointed star.

　　 The keyhole is located right in the middle of the six-pointed star.

　　 "Keyhole? Irina, go and take a look."

　　 Chu Chen said.

　　 Irina used the water control ability to let the submarine approach there.

　　 Chu Chen pointed the light there and looked at it.

　　 It looked like it was indeed a keyhole, and there were some symbols underneath. I don't know if it was a text. Chu Chen couldn't understand it, and neither would the mermaids.

　　............................

　　 "Can this thing be opened or not?"

　　 Chu Chen couldn't help thinking.

　　 It's just that after observing for a long time, I can't observe a single reason.

　　 The main reason is that you can't go out now, otherwise you can see if it is a real keyhole. If it is real, Chu Chen has a hundred ways to allocate the key.

　　 "Explore with mental power."

　　 Chu Chen thought.

　　 He poked his mental power out.

　　 Then, he went into the keyhole.

After 　　 dived in, Chu Chen suddenly found that the six-pointed star pattern was lit up.

　　 In the next second, Chu Chen's eyes changed.

　　 No, not in front of the eyes, but a soft light perceived by the mental power!

　　 This group of soft light is not seen by the eyes, but the spiritual power seems to be drawn into a special space.

　　 There, under the perception of mental power, there is only a ball of light!

　　 Then, Chu Chen "see", the light slowly turned white, becoming whiter and whiter.

　　 appears extremely pure/clean, just like a holy light.

　　 Then, Chu Chen heard a voice: "The soul test passes, and the opening conditions are met, and the door opens automatically."

　　 This voice... is not the language of the earth star, and it is different from the language of the mermaid, but because it was "heared" by the mental power, Chu Chen understood it naturally.

　　.

　　 With the sound of the sound, Chu Chen saw that on the moon core, the door that looked like a pattern slowly rose.

　　 As the gate rose, sea water rushed in frantically, filling it up.

"what?"

　　 Seeing the door rise, the mermaids and Tina the snake are quite surprised.

　　 "This door is real!"

　　 The Little Mermaid plucked Wei.

　　 Chu Chen nodded and turned the light inside. It seemed that there was a circular channel inside, and the other side of the channel was also seabed gold. Apart from that, nothing could be seen.

　　 "Your Excellency Chu Chen, what should I do now?"

　　 Irina asked.

　　 Chu Chen groaned for a while, and said, "Let the submarine go in and try... Forget it, go up first, you go out, and I will come down alone."

　　The reason for this decision is that if there is any accident when entering, such as being locked in, Chu Chen can leave through the island owner's watch, but they can't.

　　 "Brother Chu Chen, let's accompany you, I don't think there is any danger."

　　 Caiwei said.

　　 After thinking about it, Chu Chen agreed.

　　 He does not feel much danger.

　　 Caiwei's telepathy ability has evolved to the present, and it also has the function of danger perception.

　　.........................................

　　 So, the submarine slowly entered the gate and entered the one-hundred-meter-long passage.

　　 At this time, the passage is already full of sea water.

　　 Soon after the submarine entered, Chu Chen saw that the door outside was slowly closing.

　　 "Brother Chu Chen, the door is closed~"

　　 Shanshan pointed to the back and said.

　　 "Don't worry now."

　　 Chu Chen had a guess, said.

　　 His words are like a reassurance, so that Shanshan settles down.

　　 Soon, the gate was completely closed, and then, under the passage, some small holes appeared, and the sea quickly disappeared.

　　 After a few minutes, there is no drop of sea water in this passage.

　　The submarine also fell into the passage.

　　 Then, Chu Chen saw that the other end of the passage was slowly rising.

　　 revealed the space inside.

Inside 　　, there is still a long passage, but inside the passage, lights have appeared!

　　................................

　　 The mermaids and the little snake girl looked at the passage curiously, wondering what's inside.

　　 Chu Chen groaned for a moment, and said, "I'll go down and have a look first. You can wait for me inside."

"Um!"

　　 The mermaids nodded.

　　 They have no legs, there is no water in it, and it is very difficult for them to walk with fish tails.

　　 "Master, I will stay with you~"

　　 Little Snake Girl Tina wants to accompany Chu Chen.

　　 Chu Chen agreed.

　　 Of course, before going down, you have to try the air composition inside.

　　 Chu Chen went down first, took a breath, and found that the air composition was not bad, and there was no poisonous gas.

　　 So she let the snake girl Tina also come down.

　　.

Although his storage space was filled with seabed gold, Chu Chen still kept dozens of cubes, and contained some essential items, such as oxygen cylinders, and some tools and food. In case of special circumstances, Can also cope.

　　.

　　 After Chu Chen and the little snake girl descended to the passage, they went all the way forward.

After 　　 walked out of this channel, he finally came to the channel with electricity.

　　 Then, Chu Chen discovered that there seemed to be a small track on the ground, and there was a flatbed truck with a length of more than one meter in front of the track.

　　 Chu Chen took the little snake girl and stood up.

　　 The top of the flatbed lit up suddenly, and then the flatbed led them along the track and began to drive into the passage.

　　.

　　 "¨ˇ is really long."

　　 When I drove in, the little snake girl found that the passage was quite long and there were many doors.

　　 Every time a door came across, Chu Chen had to poke in with mental power before opening it.

　　 After the spiritual power went in, what I saw was the same as the first time I saw it. It was a bright light, and then the light would turn white, and then the previous sound would sound.

　　 "This channel will not lead to the lunar core center, right?"

　　 Chu Chen thought.

　　 He felt that this is extremely possible.

　　.

　　 The flatbed cart continued to move forward along the small track, Chu Chen calculated the distance, and soon Chu Chen felt that he had gone deep into the lunar core for several kilometers.

　　 The diameter of this lunar core is ten kilometers. If this passage leads to the center of the lunar core, it will be at least four kilometers long.

　　 As expected, when Chu Chen felt that he had reached four kilometers and several hundred meters, the flatbed stopped.

In front of 　　, a door appeared, and the door was very small.

　　 Chu Chen explored his spiritual power again.

After 　　 dived in, it was still the same as before.

　　 "Soul detection is passed and you can enter. Those who have not notified the detection cannot enter, otherwise they will be attacked."