When Liu Qian and the team of the Milky Way Belt returned to the main building to meet Zhang Shengli with nothing, Zhang Shengli reported Liu Qian's good news with a face full of surprise. In what looked like a utility room in the stairwell on the first floor and the second floor, he found a secret door that led to the underground.

There was originally a wooden cabinet there, after removing the wooden cabinet, the wooden floor behind it could be uncovered as a whole, and after the wooden floor was uncovered as a whole, a circular alloy hatch appeared, which was locked, and as long as the upper lock was opened, it could go down from here to below.

There is no logo of the Three Domains Company on this alloy hatch, and it is not the same as the hatch that Liu Qian saw in the warehouse on the negative second floor of the Biochemical Intelligence Research Center Building before, it does not look like an electronic lock structure, but the kind of door lock that can only be opened with a special key.

Zhao Meng stepped forward and got busy with his homemade lock pick, but after a few minutes, he retreated in disgrace.

"It's a mechanical door lock device I've never seen before, and it should require a specific key to open, which I can't do with my skills." Zhao Meng's face was very embarrassed and he reported a few words to Liu Qian. The door lock can't be opened, he only tried to know that the door lock that can be opened only needs time, and if it can't be opened, it is useless to spend more time, and it is impossible to open it.

"Can't really open it? Don't try it again? Liu Qian had an unwilling expression.

"I can't open it, if I can open it, I'll know it when I try it." Zhao Meng replied to Liu Qian.

Seeing that Zhao Meng couldn't open the lock, Liu Qian began to try to open the lock violently, but after being busy for a while, Liu Qian also gave up.

The ground was made of reinforced concrete, and judging by the sound of the knocking, there should be a deep well underneath the circular hatch. It is likely that the perimeter of the deep well is entirely made of cast reinforced concrete, and even that deep well may have a steel shaft, and there is no possibility of a strong demolition unless a designated key is used.

So Liu Qian once again asked the three groups of people to act, this time to find the key, not only to search all the building rooms. They also had to search for each corpse, and if it was something like a key, collect it and bring it back here.

"In the middle of the night, why are we tossing so much? This island is not safe, I think it would be better for us to leave this island and return to the yacht, and we can move food or anything to the yacht! Zhou Mingliang couldn't help but say a few words.

"Yes! Zhou Jingjing has already had an accident just now, maybe who will have an accident next, maybe someone will be killed at that time. And then the brains are eaten. Let's leave the island on a yacht while there is no accident yet! Others chimed in.

"Master Liu, let's listen to everyone's opinions." Zhou Mingliang saw that many people echoed him, so he said to Liu Qian again.

"It's not your turn to make decisions here, if you don't want to follow my rules and don't want to stay in this team, the next time you leave the island and dock, I'll give you a chance to leave alone." Liu Qian couldn't open the door of the secret laboratory, and he was already a little upset, and he couldn't help but be a little angry when Zhou Mingliang made such a noise.

"I'm just talking. Which round will I decide? Liu Ye doesn't need to be so angry. Zhou Mingliang replied to Liu Qian in a curtled manner, and finally stopped squeaking.

All the players were very tired. But under the urging of the leaders of each group, they had to act, although they didn't dare to say anything, but in their hearts they felt that Liu Qian was tossing them, looking for something, why not let everyone rest for a night first, and then search tomorrow?

Liu Qian certainly had his reasons for doing this. He sensed that the island was very strange, especially before the mutated zombie with hallucinogenic abilities was not killed, and he didn't want the team to stay on the island for too long, so he only searched the secret laboratory and immediately left here and returned to the yacht. This is also for the safety of the players.

The next search took about half an hour, and everyone searched for at least a dozen keys from the room and the corpses, but none of them could open the round hatch, and showed it to Zhao Meng, who also confirmed that these keys could not open the round hatch.

"There are two levels of mechanical locks, and there should also be two levels of keys, the first level is about ten centimeters long, and the second level should be about eighteen centimeters after the second level. The key may have five teeth, two of which are disguised, and then there is a mechanical trigger mechanism on it, only when the key penetrates into the keyhole at a certain depth, the mechanical trigger mechanism will pop out, and the secondary keyhole will be unfolded to enter the deeper keyhole and open the hatch. After studying the hatch lock again, Zhao Meng told Liu Qian about his speculation.

"Can you make a tool like this to pry open this lock?" Liu Qian asked Zhao Meng.

"If it is in my home, with an electronic lathe and a complete range of tools, I may be able to make such a lock-picking tool in ten days, but there are no such conditions here." Zhao Meng shook his head at Liu Qian.

"The players are tired, Master Liu, what are we going to do next? Go back to the yacht, or just rest on the spot? Zhang Shengli pulled Liu Qian aside and asked him very tactfully, when he led the team just now, the team was full of complaints, and it was really not good to continue to toss like this.

"In the middle of the night, the yacht is not very safe in the water, Xiao He and I have just confirmed that the thing came out of the water, has hallucinogenic abilities, and is likely to have followed us. If we stay on the yacht, who knows when it will come out of the water and attack us? Its hallucinogenic attacks are remotely launched, and everyone is even more powerless to resist when they stay on the yacht, and it is difficult to disperse if something happens. Liu Qian shook his head. He wouldn't leave the island until he had explored the lab.

"You mean, everybody stays on the island and doesn't go anywhere?" Zhang Shengli confirmed to Liu Qian.

"Yes." Liu Qian nodded.

"Listening to what you just said, that thing launched a hallucinogenic attack on Zhou Jingjing only after entering the women's toilet, which shows that its long-range attack ability is very limited, maybe only a few meters away. Why don't we all go into the hall on the first floor, lay on the floor in the center of the hall to rest, and then leave people on duty, looking in four directions. As long as it is found to be in, it will immediately sound the alarm, it seems that it is impossible to hallucinate all of us at once, as long as I, Liu Ye and Xiao He are not hallucinated, we can launch a counterattack against it. Zhang Shengli came up with an idea. (To be continued......)