The veins in Lian Yan's mind gradually became clear, and in the end, she seemed to have found a breakthrough, whether it was right or not Lian Yan didn't know, but she still took action.

"Lian Yan, why did you come here?" Yuan Dou asked.

"I thought about it and thought it was all about the door." Lian Yan excitedly pointed to the door in front of Yuan Dou and said.

"On the door?" Yuan Dou looked at the door in front of him suspiciously, and continued, "This door is worthless, the induction device is broken, and the manual system has no tricks, anyway, I can't see anything." ”

"You stand back, let me see."

After looking for a while, Lian Yan didn't find the mechanism as Yuan Dou thought, and then Lian Yan looked at the door frame in a daze, not knowing what she was thinking.

"Didn't you find it, I'll just say there's no mechanism on the door." Yuan Dou said.

"Silence!" Lian Yan glared at Yuan Dou.

Yuan Dou honestly stood behind Lian Yan and didn't dare to disturb Lian Yan anymore. It's just that Lian Yan was in a daze, there was no follow-up, and the impatient Yuan Dou walked around, running outside the door for a while, and running inside the door for a while. Suddenly, Yuan Dou felt something unusual, and every time he stepped from this room to another room, there would be a slight vibration on his left hand, and because it was too slight, Yuan Dou repeatedly crossed before noticing the vibration. The vibration was emitted by the silver ring that Yuan Dou was wearing on his left hand, Yuan Dou stared at the ring, and went back and forth to the two rooms again, confirming the correctness of the feeling, it was not an illusion, the ring really made a vibration.

Yuan Dou was very excited, and excitedly woke up Lian Yan, who was thinking.

"Lian Yan, Lian Yan, look at this!"

Lian Yan, who was interrupted, looked at Yuan Dou with a frown, and Yuan Dou was sure that if there was no reason, this anger would not be easy to dissipate. Swallowing his saliva, Yuan Dou whispered, "I kept going back and forth between the two rooms just now, and I found that the space ring in my hand had a reaction. ”

"Really? I'll try. ”

Yuan Dou quickly hid his left hand, looked at Lian Yan and said, "You know, you can't take it off." ”

Lian Yan said angrily, "I know, let me hold your hand, it's over." ”

Then Lian Yan grabbed Yuan Dou's left hand, pinched the ring on Yuan Dou's hand, walked around, and finally confirmed that the ring had a reaction. After thinking about it, Lian Yan said, "Let's try that door." Then he impatiently pulled Yuan Dou and ran to the opposite door.

After trying a few times, it was confirmed that the space ring only reacted to the door just now, and then it was logical to determine that the key was on that door.

The reason why the ring reacts is because there is also a space in the ring, and it is a very stable space, so this space cannot be folded, so there is a conflict and a change.

After Lian Yan was sure that there was something wrong with that door, she summoned everyone who searched around, and then pointed out with great certainty that that door was the key point.

Hearing what Lian Yan said, Ye Yang said inquiringly, "How do you know that there is a problem with that door?" ”

Lian Yan couldn't answer, she wanted to keep Yuan Dou's secret, and looked at Yuan Dou. But Yuan Dou felt that it didn't matter, after all, they lived and died together, so when Lian Yan didn't know how to answer, Yuan Dou gave Lian Yan a look and signaled that Lian Yan didn't have to care about this.

Then Lian Yan explained her train of thought from the beginning, and at the same time informed everyone of Yuan Dou's space ring as evidence. In this way, everyone is convinced of Lian Yan's reasoning. Then everyone decided to give up searching for other places, and gathered around the door in an attempt to find the mechanism.

Together, we checked the door inside and outside several times, little by little, but we still had no clue. At this time, Lian Yan stood up and pointed out the only place that everyone had not looked for, that is, the door panel after the door was lowered, but this was just the finishing touch. When the door panel is lowered, everyone can see the difference at a glance, that is, it is different from the front of the door, and the back has an intricate pattern. Under Ah Chu's powerful scanning function, the key was finally confirmed, that is, the different lines hidden in the four corners.

The first time they entered the room, the door was opened from the front, but the front was no different from other metal doors, and the raised door hid the pattern on the back, so they didn't notice any problems. In fact, due to its frequent use, this kind of mechanism is definitely not too complicated, it is just a general defense system, and it is natural for advanced civilizations to easily detect the problem, but for the earth civilization that has not yet come into contact with space knowledge, such a device is beyond imagination, so it will delay Yuan Dou for so much time, but fortunately, the key is finally found.

The lines of the four horned mountains look ordinary to the naked eye, and they are no different, but in Ah Chu's eyes, they are characters like words. By reversing the direction of a character in the lower left corner, the door to the inner room opens in front of Mototo.

After finding a way to open the door, everyone discussed it and decided to rest for the night before setting off tomorrow to explore the inner rooms. After a whole day of searching, although everyone's physical strength is not consumed, but the spirit is still a little insufficient, such a state is not enough to face the more dangerous internal room, so it is still necessary to recuperate.

The next day, everyone packed their things energetically and prepared to leave for the inner room. At this time, the rejuvenated Ye Yang came to Yuan Dou's side, and asked in a low voice in Yuan Dou's ear, "I forgot to ask yesterday in a hurry, can you really hold things with this ring?" ”

"Isn't the space ring just for holding things?"

"Can you help me pack it in? All of you are grandmasters, and this weight is nothing to you, but it is hard for me to carry it. ”

"I'm so sorry, I want to put all the salutes in it, but I can't."

"Why?"

Although after Yuan Dou was promoted to grandmaster, I don't know what the reason is, the space of the ring is twice as large, but it is still only the size of a basketball, and it can only hold some small things, and the half-human-high backpack really can't hold it. By the way, the ring shield function is still not used. Yuan Dou honestly told Ye Yang the size of the space, but he was despised by Ye Yang, and Yuan Dou pursed his lips.

"What are you doing there, you're ready, I'm waiting for you."

"It's coming, it's coming."

The group stood at the door, the door opened again, and the blue curtain appeared in front of them again, and after discussion, Ah Chu walked in first. Two minutes later, Ah Chu came back and told everyone that there were no enemies inside, and only then did everyone dare to enter the thin curtain one after another. Yuan Dou followed Ah Chu closely, Lian Yan walked behind Yuan Dou, followed by Ye Xi, and Ye Yang at the back, everyone lined up and walked over slowly.