There are three rows of strange houses on the cliff, most of which are wooden structures, and most of the houses are not visible from their exteriors due to the fact that they have not been inhabited for decades. The outside of the house was completely covered with trees, roots, vines, and weeds, and it was difficult to see from the outside that there were so many houses on the cliff wall.

The four men had no time to pay attention to the three rows of wooden houses at the bottom of the cliff, but instead jumped into the dammed lake formed by the blocked channel of the Mekong River with their diving equipment and weapons. The water is a little cold, at an acceptable level, and the temperature here is very comfortable for the four people who have just returned from the Sea of Okhotsk.

The underwater transparency is very good, and you can see everything near the water without the headlights. The four men descended the stairs between the last row of houses, which extended all the way underwater, and when they descended more than three meters underwater, they saw a large row of thatched houses, which were about the size of the three rows of houses above the water, except that there was more thatch on the roof. The house is well preserved underwater, with a thick layer of green moss on every stone and wood.

Ma Qian and Lao Niu entered these thatched huts, which were furnished in a very different way from those on the lake, and the houses were lined with single beds, each with six beds, which seemed very crowded. The four people are gesturing to each other underwater, meaning that the phenomenon is strange, and the houses do not look like aboriginal people, but like a group dormitory. Although the beds are made of wood, metal nails have been found in all of them, which means that these beds have been made in recent decades, as metal nails are clearly a product of modern civilization.

Without figuring out the purpose of this row of houses, everyone agreed to continue down, walking down the steps, and after a few meters, the underwater vision was a little weak, and the diving headlights needed to be turned on to see more clearly. The diversity of underwater life is very good, at least 20 kinds of fish have been seen underwater, some fish weigh more than 200 catties, these big fish that can't be named are bigger than a person, they swim slowly around people, not panicked at all, compared with the fish in some rivers in our country, the fish here are not only big, but also not afraid of people, they live in harmony with all the creatures underwater.

Zhao Baixiong even thought that if he spent all his money and couldn't get along, he would go to this lake to catch some fish and sell it back to China, maybe he could get rich. Especially those curly meat insects floating on the water, that is a unique species here, if that thing is sold to Beijing, Guangzhou and other cities, the price should be expensive, maybe the taste of that thing is very delicious, it is best to sell it for tens of thousands of yuan a catty, then it will be developed.

The next row of houses, still the same, are lined with rows of single wooden beds. Without much novelty, the four of them continued to dive, and after seeing the third row of huts, they reached the bottom of the lake.

There are three rows of thatched huts under the water, although the number has not been counted, but it is estimated that they are about the same as those on the lake, and nearly 100 houses have been found in this valley, where there were once hundreds of households. That is, hundreds of people once lived here, and perhaps for some irresistible reason or some terrible plague, all of them left, or all died.

The layout of these houses is simple, and the exterior is made of wood, which is made of nanmu and beech from the banks of the Mekong River. There are some carvings on the exterior wall of the house, which are very simple carvings, all of them are some totemic symbols, although there is green moss growing on the wood, and some traces of carvings can still be seen. It is estimated that the house above the lake also has carvings, but it is not visible due to the fact that the façade is surrounded by plants.

The four of them swam back and forth along these underwater huts a few times, and found no very useful information, and painted some modern paintings on the interior walls of some of the houses, and the contents of the paintings were of two kinds, one was weapons, all of which were rifles and cannons, and the other was about men and women, and it was obvious that the paintings were done by men, and there may have been a large number of men living here, most likely soldiers.

For, military! Although Ma Qian and Lao Niu could not speak, it can be judged from these drawings and the unit beds in the room that there may have been hundreds of people living here, and these people were some organized people, soldiers or workers. This fully shows that this was the P7 base of the time, and these houses were where the mining and alchemy workers lived at that time.

The only question is, why did these people live underwater, why did they not live in houses on the water, are these people amphibians, frogmen?

Or, when the mine was opened and alchemist, the lake had not yet been formed? By the way, this may be the most likely. Most of these workers live in the bottom three rows of houses, which may be due to its proximity to the gold mines. How close is it to the gold mine?

Several people decided to look around the area, more than ten meters away from the house, there was a sunken area, which was more than five meters lower than the ground on this side. Lao Niu and Zhao Qingmai dived down to look for a while, but they didn't find anything. Lao Niu indicated that this subsidence zone was the old bed of the Mekong River, where the river should have flowed before the lake was formed. And these houses are right next to the river, about ten meters away from the river.

At that moment, the four of them crossed the old riverbed under the lake and came to the other side of the river, that is, on the opposite side of the cliff on the side of the house. The river is only about 20 meters wide, and after crossing this section of the river, you can see that the underwater ground on this side is very undulating. There are a lot of big pits, dive and take a closer look, this is a pit, it is a huge hole, these holes are open on the ground, are vertical and extend downward.

The cave was dark and full of water, and the visibility of the water was very poor.

This is supposed to be a pit, and I didn't expect it to be so easy to find the pit of the year. The four of them counted here, and there were about fifty or more pits, and it was not known how deep these pits were. It is very likely that one of the pits has a mechanism, and the breathing condition of the lake water seen on the surface of the water in the early morning must be related to these pits.

After the four of them were a little excited, they returned to their senses. Now everyone is close to fifteen meters underwater, there is a certain danger in going down the hole to explore, after all, the water pressure is large, and at the same time, I don't know the situation in the cave, which hole is possible to find the news of Xingtuo at all, so I can't go down to find it hole by hole.

In that case, the amount of oxygen in the body may not be enough. You don't want to stay underwater for too long, you have to find the hole with air coming out as quickly as possible.

Most of the potholes in the ground have been destroyed by the water, and the collapse is more serious, after all, these holes have been there for decades. These holes were apparently used for gold ore mining or gold ore. So, where is the refinery, Ma Qian, Lao Niu and the others saw that factory underground in Naumeng, there is some equipment, and it is unlikely that such a factory will be opened in a deep pit. Finding the Refinery should be a quick way to solve the mysteries of this series.

In search of the refinery, the four of them split into two groups and split up underwater.

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