The three of them continued to walk forward, the more they walked, the more intense the green light became, the blind man couldn't help but squint the small eyes, several people felt that the reason for the strong light was that their eyes were used to the dark environment, Luo Lie raised his eyes, but saw a huge green ball in front of him, the light was emitted from the green ball, the diameter of the green ball was about three meters. Luo Lie originally thought it was something like fluorite, but then he thought about it, fluorite shouldn't shine on its own.

Come to the front of the green ball, see the green ball engraved with mountains and rivers, but it is a huge globe, this globe is carved according to the whole map of Kunyu, when Jiang Youren dedicated the whole map of Kunyu to Emperor Qianlong, attracted the joy of Longyan, got the reuse of Emperor Qianlong, and later presided over the drawing of the "Thirteen Rows of Maps of Qianlong", it should be said that this person has made an extremely outstanding contribution to the development of Chinese geography.

The blind man looked at the huge globe, his face turned green, and he praised: "Damn, it's such a big night pearl, it's worth old money." ”

Luo Lie secretly wondered in his heart, it was not clear whether this was a night pearl or not, but it may have existed underground for a hundred years, and it could still shine for such a long time, and it must be an extremely rare and extremely precious thing.

The blind man circled around the huge night pearl, thinking in his heart how to transport the night pearl back, but soon he realized that there should be no possibility of transporting such a large night pearl out.

The sparrow noticed the topographic map on the green ball, and there were several obvious black lines on the topographic map, Luo Lie also noticed this, and he carefully identified them, these black lines originated from the location of Kunlun Mountain.

Sparrow said: "This should be the dragon vein!"

The blind man was quite accomplished in Feng Shui, and he couldn't help but laugh when he heard the sparrow say this: "There are twenty-four dragon veins, and each dragon vein symbolizes the Son of Heaven, do you want me to show it to you?"

Sparrow said: "Mount Meru is the bone of heaven and earth, and the heaven and earth of Zhongzhen are giants. For example, the back of a person and the neck beam give birth to a dragon with four limbs. The limbs are divided into four worlds, and the north, south, west and east are four factions. Tens of thousands of journeys in the northwest, and three curtains in the east. Only Nanlong entered China, and the fetal ancestor came strangely ......"

The blind man was already dumbfounded when he heard this, of course he was no stranger to this mantra recited by the sparrow, this is the "Shaking the Dragon Sutra" written by Yang Xiaosong of the Tang Dynasty, Yang Xiaosong is a generation of feng shui masters, in his treatises, that the Eurasian leylines all originate from the Kunlun Mountains, except for the Himalayas and the Tianshan Mountains, other mountain ranges are the continuation of the Kunlun Mountains, and he believes that the dragon veins are the Kunlun Mountains. The Kunlun Mountains are divided into four dragons, east, west, north and south, the east dragon and the south dragon enter China, the west dragon goes to northern India, and the north dragon reaches the Alps, giving birth to civilization between dragons or on both sides.

However, it is more widely circulated in China is the twenty-four dragon veins, relatively speaking, Yang Xiaosong's dragon veins are said to know not many people, the blind man did not expect that the sparrow would be so familiar with the "Shaking the Dragon Sutra", if it is really a dragon giving birth to a dragon and a phoenix, the son of a mouse will make a hole, Ma Boxuan, the daughter of a famous archaeologist, is also well-read and knowledgeable.

Luo Lie didn't know much about these aspects, and he only understood after listening to their explanations, but the theory of the dragon vein was strange, and he never believed that the dragon vein was related to the rise and fall of the dynasty.

When the three of them studied the green ball, the green light emitted by the sphere began to decay rapidly.

The blind man couldn't help but cry out evilly, this big ball had been in the ground for so many years and its light had not diminished, and he didn't expect that as soon as they came, this ball would quickly dim. Luo Lie didn't think it was because of them, the attenuation of the light of this ball should have a direct relationship with the water, just now the big ball was soaked in water, its light was probably because of the interaction with the water, and he opened the valve by himself, and all the water in it was discharged, and the big ball lost the environment of water immersion, so it lost its luster and quickly dimmed.

Sure enough, after a while, the green ball had become dim, and it had turned from the whole body green just now to a gray one, and now it looked like an ordinary stone ball.

The blind man reached out and patted it, confirming that the ball was supposed to be solid.

But the sparrow said, "Don't touch it!"

The blind man hurriedly took his hand away, but saw a golden pattern appear on the big ball.

The sparrow could already see at the first glance that what appeared on the big ball was the structural diagram of the waterway below the Old Summer Palace.

Luo Lie saw that although the change on the green ball was magical, the essence was nothing more than a chemical reaction, this big ball did not know what material it was, it glowed when it met with water, and after the water receded, the big ball itself reacted with the air, and the structural diagram hidden on the ball was exposed, and it was not complicated to figure out the principle, but the person who could design this big ball must be extremely intelligent.

Sparrow said: "This place is not far from the Xihai, and the other treasure place indicated by the treasure map that Zhou Xiaodie gave you should be below the Xihai." She pointed to the front left.

The blind man walked over quickly, and sure enough, he saw a pipe about one meter in diameter, and looked down inside, but the pipe was deep and could not see the end.

The sparrow, however, was full of courage at this time, and was the first to drill into the pipe with a candle, and said in a loud voice: "From here, go straight for about three hundred meters to reach the bottom of the tin sea, where there should be a flood drainage center that we have just been washed down by the torrent. In a short time, she had forcibly memorized the diagram of the sewer structure carved above the green ball.

Luo Lie said with concern: "You slow down." He also climbed in with the sparrow.

The blind man was left last, he was bloated after all, and crawling in such a pipe was an extremely difficult thing for him.

The pipe is still damp, before Luo Lie opened the gate just now, there must be all water here, the sparrow was the first to drill out of the pipe, and found that this side is a shaft, although there is still some water in the well, but it can drown their ankles, looking up, this shaft must be at least fifty meters, the top is sealed, and there is a winch on the ground, which is almost exactly the same as the turntable that Luo Lie triggered the drainage.

The sparrow pointed upwards and said, "There is a passage twenty meters above that leads to the bottom of Fuhai. ”

The blind man looked up, and the walls of the wells around him were extremely smooth, and he couldn't find anything to climb, so he shook his head and said, "We can't climb up this." ”

"It's true that we can't climb up now, but if we open the inlet valve, we should be able to get there with the buoyancy of the water." ”

The blind man looked down at the winch and said, "You mean, this is the water inlet valve?"

Sparrow nodded and said: "Yes! According to the underground water network structure diagram I saw just now, this should be the water inlet valve, open here, the drainage valve just now will be closed, and the water will flood this place again, as the water level rises, we can float to the top, enter the passage at twenty meters, and along that channel, we can go directly to the underground palace below Fuhai." ”

Hearing the word dungeon, the blind man and Luo Lie glanced at each other at the same time, the dungeon in the sparrow's mouth was the secret treasure Ye Qinghong said, although there were all kinds of signs that there were treasures hidden under the Old Summer Palace, but they didn't expect that the treasure was so secret, and it had such a close relationship with the intricate underground water network of the Old Summer Palace.

When the blind man heard that the secret vault was near, he inevitably felt excited in his heart, and walked forward to unscrew the water inlet valve, but Luo Lie said, "Have you ever thought about how we can get out?"

The blind man was stopped by him, the drain valve was on the other side, about a hundred meters away from here, and if he wanted to turn around and leave the way he came, he had to activate the drain valve first, and he could not guarantee that he would be able to complete this before the oxygen ran out.

Luo Lie was not worried about this, but what position the water surface would rise to after opening the water inlet valve, if the water surface had been overflowing the passage above, then the air here would be cut off, and among the three of them, I am afraid that only he had the ability to swim back, and it was impossible for the blind man and the sparrow to hold their breath underwater for so long.

Luo Lie said: "Why don't you go back first, I'll go up and have a look alone." ”

The sparrow shook her head and said, "Can you remember the water network structure diagram? Do you know what to do next?" She pointed to the top and said, "The location there should be much higher than the well in Zhengjue Temple, and I believe that even if the water level reaches the highest, it will not be possible to reach the top, in other words, we can all have a chance to breathe." She paused and said, "Actually, we don't have to go back and open the drain valve, as long as we enter the passage above, there is also a drain valve inside." ”

Luo Lie showed admiration, and in a short period of time, the sparrow not only understood the waterway structure diagram, but also knew the key to it in his chest, and this memory alone made him feel ashamed.

The blind man said: "If you don't enter the tiger's den, you can get the tiger, do it!"

Sparrow smiled: "I can see that picture very clearly, in fact, there is more than one way out, we should not have to go back." ”

Luo Lie saw that the sparrow showed such confidence, which proved that she must have a certainty in her heart, since this is the case, she might as well follow her instructions, so she asked the blind man to call Arnold in first, since she decided to move on, she couldn't leave Arnold there alone, once the sluice gate was opened and the water was released, it was equivalent to severing the connection with Arnold.

After the four of them reunited, they worked together to twist the valve counterclockwise, and after three rotations, they felt their feet sink and then the water level below rose rapidly.

Because the water poured in from below, and they were in the shaft, the impact was not great, and the four of them kept treading water, and the rise of the water gradually carried them higher.

Half an hour passed, and the water level had only risen to a height of twenty meters, and she could already see the underground palace passage that the sparrow said, but even if Luo Lie straightened his arm, his fingertips were still thirty centimeters away from the lower edge of the passage, Luo Lie first held up the sparrow and helped her climb up, and then the sparrow reached out and pulled several companions in the water up one by one, in exchange for the usual she did not have so much strength, but with the help of the buoyancy of the water, she did not spend much effort to complete this matter.