"The dominoes carved into the stone walls tell us that with the right method, we can open it with a slight effort," Watson said. ”

He Jing said, "But we don't have such a set of dominoes. ”

"But we have gears. "There are countless gears on the outside of the tunnel, all kinds of specifications.

Everyone's eyes lit up, these gears are not ready-made...... Gold medal? More powerful than dominoes. Yelu Zhousheng said, "The first step is to get rid of all these fossils that block the tunnel space. The second step is to move the appropriate gears in and put them in. ”

He asked everyone if they were hungry, and people said they weren't hungry, probably because the discovery made everyone excited, and no one thought about stomach problems.

Yelu Zhousheng didn't feel hungry either, he didn't understand what was going on, it was not a light manual labor just now.

There was no place for the fossils in the cave, so they had to break them up and transport them to the outside of the tunnel. It wasn't that hard to break them, but it hurt Hejing for a while, and in her eyes they were all treasures.

There is also a trick to breaking a pterosaur fossil, and it is difficult to do so first, Yelu Zhousheng explained and demonstrated at the same time. He first knocked off one of the dinosaur's wings, swung the long gear shaft and struck it once or twice at the base of its wings.

Then there was its neck, the other wing, and everyone was watching to see what he was going to do next, because the pterosaur was now left with only a round body and two long legs propped up on the ground.

"Then be careful," said Yelu Zhousheng, "and then he broke one of the fossil's legs, and the body of the pterosaur on top lost its balance, and the other leg broke itself, and the fossil's body fell with a bang, breaking into small pieces on the rock wall of the tunnel.

Yelu Zhousheng had already taken precautions, jumped back to avoid the splashing rubble, and said to everyone, "Deliver them outside." ”

Everyone worked together to transport the rubble out of the tunnel and dump it outside the gate of the Earth Laboratory. It was now dark outside, and they saw that the power plant in the ruins of the garden below the hill was still working, and two lights were always on, shining a small light in the darkness.

They returned to the cave again and cleaned up all six pterosaur fossils according to the appearance of Yelu Zhousheng. For a night, no one had eaten, and there was still no hunger at all.

Some people say that you have to eat if you don't have to be hungry. So they went back to the laboratory, where three women had collected fruit during the day. When the fruit was brought in, everyone sat on the pile of gears, but no one reached out to touch them. Yelu Zhousheng also had no appetite, and finally said, "Why waste. "Just stood up, and now another job begins.

They measured the height of the tunnel, and if it was more than 3 meters, they chose a gear that was 3 meters high. On the gear pile, they first moved the top pinion one by one, and the height of the gear pile slowly decreased, and the soft golden light transmitted from the bottom reflected on everyone's face.

The big gear was so heavy that it took five people to lift it into the tunnel. They put the long end of the gear in first, measured the position, and little by little together they erected it with its head up.

"We have to be safe, we have to keep an eye on it when we walk and stand, and if it falls, we know where to hide," and then they went to lift the second gear.

This time, everyone had experience, and the weight of the gear was lighter than the previous one, so it didn't take much effort to erect it. These gears have tenons at the end of their shafts, like a three-pronged foot, and stand firmly on the hard rock face at the bottom of the tunnel.

In the middle, the people just sat on the gear pile and rested for a while, no one felt tired, I don't know if it was excitement or some other reason, probably the secret of the stone gate that blocked the way of the pterodactyl a long time ago was inspiring them.

The position of each gear was measured by Yelu Zhousheng, so that when they fell, the part of the chainring smashed right on the shaft of a large gear in front. These gears seem to be made specifically for this, and when they go back to the gear pile to look for it, they can always find the most suitable one among the thousands.

Eventually, all of them turned sideways and stepped out of the rows of gears in the tunnel, retreating to the tunnel entrance on the other side of the laboratory. Yelu Zhousheng was holding the last pinion in his hand, which was the 16th. He erected it with one hand.

He said to the people behind him, "To be on the safe side, everyone go outside the laboratory." As they withdrew, Yelu Zhousheng took a breath and nudged one finger on the chainring of the first gear, watching it fall toward the second gear.

He turned around and stepped out of the tunnel, listening to the sound of "ding" behind him. This is followed by louder, but slightly lower scales than the previous one. He walked briskly to the door of the laboratory, listening to the sound of collisions coming from the tunnel, not knowing what was going on inside.

Yelu Zhousheng saw the other four people outside the door of the laboratory all with their necks curled, the lights under the mountain had been extinguished, it was pitch black, but the ground at the door was covered with a layer of white things, and people felt a tremor under their feet.

"What is this?" He Jing pointed to the ground in front of his feet and asked Yelu Zhousheng. Yelu Zhousheng squatted down, stretched out his hand and picked up a handful, rustling, cool, and melted in a while. He said, "It's snow." ”

These people waited at the door for a while, according to Yelu Zhousheng's words, to wait for the dust in the tunnel to settle before entering, in fact, there was still half a sentence he did not say - to wait for any monsters to escape from the tunnel.

They started with Yelu Zhousheng, Watson second, Shangguan Hong, Shangguan Hua, and He Jing behind Shangguan Hua, holding one of her hands. They slowly walked into the tunnel, stepping past the gears that had rolled to the ground.

The light from the gear pile illuminated the inside, but an even more brilliant light emanated from the stone door. The stone door was broken in two, and both pieces fell into the tunnel, and behind it was a space two feet square.

Something in the space was emitting six kinds of light, red, orange, yellow, blue, green, and purple, Yelu Zhousheng stood there, letting his eyes slowly adjust to them, and quietly reminded at the end, "Don't have any radioactive ......"

Beneath the six rays of light, a living creature crawled out of the hole behind the door, and slowly, to the edge half a foot above the ground, and kept crawling. Then, silently, it fell from above onto the splinters of the stone door, and with another flick, it fell to the ground.

Yelu Zhousheng looked at it, it had a porcelain cyan back shell, and the back shell was only the size of the back of Hejing's hand after he clenched his fist, four-legged, crawling slowly, and he was not afraid of these people.

Yelu Zhousheng squatted down and grabbed the little thing. It had a strange pattern on its shell, "This is a mysterious animal mentioned in the Book of Changes...... "He held it in the palm of his hand and passed it to Watson behind him.

"There won't be anything radioactive."

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