Origin

After Zhang Shukai finished speaking, Wu Zhongyuan secretly breathed a sigh of relief. Zhao Ying and others had been trapped for a long time. The longer they were delayed, the smaller their chance of survival. If they could use a gas cylinder to blow open the stone door, they would save a lot of money. Time, but he still had concerns, "Can I control the power of this explosion?"

Zhang Shukai said, "The power of the explosion can be controlled by adjusting the air pressure inside the bottle, but the effect is definitely not as good as the most precise explosion."

Wu Zhongyuan did not ask any more questions. Zhang Shukai was an expert in this field and he did not need to worry about these questions.

The breathing device was still connected to the cylinder and needed to be disassembled. While dismantling it, Zhang Shukai said to Lu Jiahui, "Try to notify the people inside and ask them to stay away."

"The stone door is closed very tightly, and they may not be able to hear the sounds outside." Lu Jiahui said.

Wang Xinran was helping to disassemble the respirator. After Lu Jiahui finished speaking, she added, "They can't hear the voices, but they can always hear the knocking. Use a hammer to knock out the Morse code."

"Most people hear Morse code..."

Wang Xinran interrupted Lu Jiahui, "Are they ordinary people? How can they be spies if they don't even understand Morse code."

Lu Jiahui nodded and went over to knock on the stone door with a hammer. Her specialty was underwater archeology, but her job was a special agent of the 18th Branch, so she naturally knew the Morse code by heart.

The two brought back two sets of respirators, but Zhang Shukai only used one gas cylinder. After adjusting the air pressure in the bottle with the air pressure gauge, he placed the gas cylinder horizontally just below the connection between the two stone doors, and then removed the stone in the stone chamber. The broken pieces of the box and stone platform were moved over and placed on the gas cylinder.

Physics is not Wu Zhongyuan's strong point, but he still understands basic knowledge. Zhang Shukai's move is to adjust the impact angle of the explosive air wave.

At this time, Lu Jiahui had typed the Morse code several times, but there was no response in the stone room.

"Stop knocking and put on a gas mask." Wang Xinran said to Lu Jiahui.

Lu Jiahui stopped banging, put down her backpack, took out a gas mask and put it on.

Wang Xinran threw a gas mask over, and Wu Zhongyuan reached out to take it, but he had never worn such a thing before and didn't know how to wear it.

Seeing this, Wang Xinran glanced at him and came over to help him put it on. His movements were very rough. He didn't care whether he pulled his hair or not when he put it on his head, and he didn't care whether it would strangle him when he tightened the straps.

Wu Zhongyuan knew that she was angry, so he kept silent. He had been thinking about Lu Jiahui for the past ten minutes. If Wang Xinran was really jealous, it meant that Wang Xinran liked him, but Wang Xinran didn't seem to have this before. Specific manifestations, but it is true that she hates Zhao Ying deeply. Before, he always thought that this disgust was due to different stances. In fact, until now, he was not sure whether Wang Xinran's dislike of Zhao Ying came from jealousy or because of different stances.

With doubts in his heart, he recalled that Wang Xinran's attitude towards him was not very friendly from beginning to end, at least not very polite. However, outside the underground palace where the great wizard slept, two staff members of the 18th Bureau pretending to be excavator drivers wanted to arrest him. Wang Xinran was very eager to stop him and even fired a warning shot. Because he helped him escape, Wang Xinran was punished afterwards and was transferred from his post.

Previously, he had always thought that Wang Xinran did this because she was a good person who kept her word, but he had always ignored an important point, that is, Wang Xinran was an official, and the execution of tasks should not be affected by personal likes and dislikes.

While Wu Zhongyuan was in a daze,

Wang Xinran was talking to Zhang Shukai, and then measured the length of the stone chamber, seemingly choosing the angle and distance of the shooting.

The two of them seemed to have encountered some problem. After a while, Wang Xinran came over to Wu Zhongyuan and said, "Give me the gun."

"Huh?" Wu Zhongyuan tilted his head and looked at her.

"Give me the gun in the bag." Wang Xinran went to unzip Wu Zhongyuan's backpack.

"Don't you have a gun?" Wu Zhongyuan said. He could speak even though he was wearing a gas mask, but his voice was low.

"Our guns cannot explode gas bottles beyond the explosion range." Wang Xinran cast a look of contempt at Wu Zhongyuan again.

Wu Zhongyuan stood still, while Wang Xinran found the pistol and threw it to Zhang Shukai with his backhand.

Wu Zhongyuan's pistol was given to him by Zhao Ying. It should be an imported product and might be more powerful than a domestic pistol. The four people exited the stone room and put on their gas masks. Zhang Shukai fired sideways.

The gas cylinder exploded. The explosion was smaller than Wu Zhongyuan expected. It was very dull. However, because the stone chamber was relatively airtight, the air wave caused by the explosion had nowhere to vent. It rushed outwards with the ash of vegetation in the stone chamber. Several stone doors outside They were all knocked away.

When the dust settled, the four people re-entered the stone chamber. They saw that a gap had been blown out under the closed stone door. Through the gap, you could see the top door stone that was higher than the ground. It was in the shape of a raised top, with a shaft in the middle. Much like a seesaw.

"The air is fine." Wang Xinran was the first to take off the gas mask.

The three of them took off their gas masks one after another and moved away the rubble and other objects piled outside the door. Wang Xinran lay down and tilted his head, looking in through the gap in the stone door. "It's very dark inside, and there is no green light."

After Wang Xinran finished speaking, Lu Jiahui handed over a small strong-light flashlight. Wang Xinran reached out to take it and shine it in, "It is also a stone room, similar in size to the previous ones. There is also a stone platform near the door, and there are scattered things on the ground. A lot of broken wood and bullet casings, they are not here."

After a simple observation, Wang Xinran stood up and stretched out his hand to push the stone door. Wu Zhongyuan and Lu Jiahui stepped forward to help. Zhang Shukai pulled out his pistol, holding both guns in his hands, focusing on alert.

After the stone door was opened, Wang Xinran used a flashlight to observe again. Wu Zhongyuan had night vision and could see clearly what was going on in the stone chamber without using a flashlight. The first thing he looked at was the top of the stone chamber. Unlike the previous three stone chambers, this The unilluminated green fluorite on the top of the stone chamber was not destroyed, but was not placed in the first place.

There were many shell casings on the ground, and there were signs of explosions. The stone slab in the center of the stone chamber was blown up, revealing a two-meter square hole. Due to the angle, the specific depth of the hole could not be seen.

In addition, there are a lot of wood scattered in the stone room, not wood fragments, but tree roots. These broken roots vary in size. The thick ones are as thick as the mouth of a water cup, and the thinner ones are as thick as a finger. The thickness is similar, the long ones are two to three meters long, and the short ones are tens of centimeters. Some are broken by bullets, while some have smooth stubbles and should be cut off by knives.

What made the four people nervous was not only the strange tree roots, but also the mottled blood stains on the ground, which indicated that someone was injured and that the owner of the tomb was no longer joking with everyone.

After observing the situation in the stone chamber, Wang Xinran squatted down, picked up a piece of gravel and threw it into the hole in the center of the stone chamber. The echo came back two seconds later. It was not the crisp sound of touching the stone surface, nor the sound of water, but a dull sound. The bass should have touched something that was not very stiff after falling.

"The depth is between eight and ten meters," Wang Xinran said seriously. "There are likely to be plants such as man-eating trees growing in the pit."

Wu Zhongyuan did not question Wang Xinran's judgment. Because Shangmen's five elements belong to wood, it was not surprising that there was a man-eating tree hidden at the bottom of the pit. However, what he didn't understand was how the man-eating tree could survive underground for so many years.

Wang Xinran moved the flashlight and shined it again, "Judging from the blood stains, they went inside."

"Why did they close the stone door?" Wu Zhongyuan was puzzled. The stone door to the north of the stone chamber was also closed.

With all his concentration, Wang Xinran also forgot to get angry with Wu Zhongyuan and said casually, "Maybe it was the person who escaped earlier who closed the door."

"What's the motive?" Wu Zhongyuan asked.

"Maybe it's to block the pursuers." Wang Xinran guessed.

Zhang Shukai said from the side, "The blood stains haven't turned black yet, it won't be more than twelve hours."

Wang Xinran nodded and asked for directions again.

"You stay outside, I'll go in." Wu Zhongyuan said.

"Have you not seen it yet? He is serious about it," Wang Xinran said. "Don't act rashly until you understand the situation clearly."

"The area from the door to the stone platform should be safe and the mechanism will not be triggered." Wu Zhongyuan stepped into the stone room.

Wang Xinran also followed in. Zhang Shukai shouted "Hey". When Wu Zhongyuan turned around, he threw the gun in his left hand to him. He kept Wu Zhongyuan's pistol because the next few stone doors would probably have to be blown open. .

This stone platform is the same size and style as the previous stone platform. The stone platform is covered with thick dust, indicating that Zhao Ying and others have not been close to the stone platform before. They may think that they will not touch the stone platform without touching it. Triggering the mechanism, but it turned out that they had simplified the question. Even if they did not want to get a reward, they had to answer the question.

There are forty-two round holes in three vertical and horizontal directions on the stone platform. After wiping off the dust on the stone platform, the characters on the stone platform are revealed. There are a total of twelve characters on the stone platform, corresponding to the twelve round holes.

"Why is there no question?" Wang Xinran was confused.

"No need for a question, he is asking me the names of the two wizards." Wu Zhongyuan reached out and grabbed the stone bowl, and there were indeed two stone balls in it.

"Why did he ask such a question?" Wang Xinran was doubtful.

"Because only I know the names of the two wizards, he did this to confirm my identity." Wu Zhongyuan said.

At this moment, Lu Jiahui said from the door, "I figured it out. The top door stone here has two tenons, one alive and one dead. It needs to be opened and closed twice to completely lock it."

"What's the purpose of using this kind of door stone?" Wang Xinran asked.

"The only function of the top door stone of this structure is to leave an opportunity to open it after it is closed. After the second closure, it can no longer be opened." Lu Jiahui said.

Wang Xinran nodded to Lu Jiahui, then turned to look at Wu Zhongyuan, "Are you sure he is asking you for the names of your two wizards?"

"Definitely, because both of their names are among these twelve characters." Wu Zhongyuan said.

"Why did he do this?" Wang Xinran still couldn't figure it out.

Wu Zhongyuan couldn't figure out why. After a brief pause, he put the two stone balls into two of the round holes.

The stone ball was put in, and the vibration came again, but this time the vibration did not come from the middle area of ​​the stone chamber, but from the stone platform itself. The stone platform was divided into two in the middle, and slowly moved half a foot to the left and right, exposing the supporting table. The stone pier has a square groove in the middle, and a small stone box is placed in the middle of the groove.

After looking at Wang Xinran, Wu Zhongyuan picked it up and opened it, only to see a white stone in the stone box.

"Is it a spiritual stone?" Wang Xinran stared in shock.

"yes!"

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