A pit of insect feasts was wiped out in the complicated expressions of everyone, and although Zhu Beichen was not very willing to cooperate, he still ate a full meal under the hostage of the two women.

For the rest of the day, everyone sat in front of July's hand-drawn map, and in front of them was an open field of reeds, cattails, and other plants, most of which could not be named.

July pointed to the marked area on the ground and told the crowd that it was actually a swampy forest.

But the map obtained in July showed a huge lake, and Han Qingxin waved his hand and said: "It is easy to understand that in areas with humid climates, the river water carries a large amount of sediment into the lake, because the water surface suddenly widens, the water flow slows down, and the ability to carry sediment is weakened, and the sediment is deposited on the lake's edge, forming a shallow." There are also tiny materials that drift to the width of the lake with the current and are deposited to the bottom of the lake. Over time, the lake becomes shallower and shallower. And at different locations in the depth of the lake, various aquatic plants gradually multiply. In the depths of the lake, various algae such as eyelid grow in the depths of the lake; In the deeper areas, duckweed, water lilies, water lilies, etc. grow; In the shallow waters along the coast, reeds, cattails, etc. grow. They grow and die, and a large number of decaying carcasses accumulate at the bottom of the lake, eventually forming peat. As the bottom of the lake gradually silts down, new plants emerge and develop from all sides towards the center, and the lake becomes shallower and smaller. When the sediment in the lake increases to a certain limit, the lake with a wide surface becomes a shallow, weedy swamp. ”

It seems that the map of July memory was drawn in an extremely distant time, and the geological landforms here have undergone changes under the natural evolution of a long time.

Zhu Beichen asked: "Then how do you explain the dwarf tree-like plant?" "In addition to the reeds, there are many plants growing in it, many of which resemble trees, and the height is about ten meters, which does not look like a swamp, but a forest.

Han Qingxin was stunned by these words, and Qi explained in turn: "The natural environment here is different, we are not familiar with every plant here, and it may not be necessary that there are trees growing in the swamp. ”

No, the fat man shook his head and said, "If the pretty girl's memory is correct, their map shows a lake, but why do they insist that it is a swamp forest?" "There is something wrong with the order, if it wasn't for the Jiang family's exploration in advance, why would they know that the lake area must be a swamp.

Han Qingxin said: "It's simpler, it's a terrain former, which can infer the specific landform by sensing the temperature, moisture and humidity of an area, and according to a certain topographic material content comparison table." ”

The fat man suddenly let out an "oh".

On this day, the sun completely covered the earth, and Zhu Beichen's team began to set off.

Considering the physical condition of Qijian, which could not be improved in a short period of time, they made a simple stretcher, and the fat man and Ning Yun carried Qijian away.

Along the way, you can also see the footprints left by Wu Min and his party before, although the footprints have become extremely shallow after a night of erosion by wind and sand.

Qijian and Zhu Beichen were in the front row side by side, and said with concern: "The situation in Qijian is much more serious than what I told you, the corpse poison is too fierce, and the method of closing the acupuncture and attacking the poison I used will not be able to ease down for long, and the corpse poison will invade the internal organs in about three days." Have you noticed that the nails of Shichima's hands and feet have begun to turn black? ”

July's voice was very soft, for fear that the others would hear it and cause panic, or leave the burden of Shichima behind, after all, his hope of life was too slim.

The further I went, the softer the soil became. The footsteps of the fat man and Ning Yun, who were carrying the stretcher, were embedded in the soil almost step by step, and moist water vapor wafted in the air from time to time.

Zhu Beichen's face darkened, and he asked in a condensed voice, "Isn't there anything you can do to save him?" "I can't get into the corpse poison of my bones, but it seems that my condition is much better than that of Shichima, maybe it's because of that kind of blood.

The reproachful tone made July feel aggrieved, and replied in a low voice: "Maybe it's okay to change blood, if that ancient book is really buried in the sandy ancient city, there should be a way." ”

July's words made Zhu Beichen's heart suddenly chill, and at this time, the voice of the dead sounded, "His symptoms are very similar to what I have seen before, what you call corpse poison is actually a virus." ”

Memories seem to bring back to that distant time, when a massive plague broke out, and the faces of the infected people withered, and gradually their eyes sank.

"What will happen to the last seven?" Zhu Beichen asked.

"I don't know, I haven't seen those people when they are dying, it is said that the internal organs will rot directly under the belly, and when the people are completely dead, the stomach will be dissected, and the internal organs will all turn into a cloud of rancid black liquid." The voice of the dead was still fearful.

Is the virus the one in your body?

"Stonehenge used to be a burial ground, and all the babies in it were infected with the plague, so it was made into that kind of thing. It devours the baby, and naturally it will be infected with the virus. The preservation technology of corpses in our period was very advanced, even if history advanced for another thousand years, the skin and body fluids on their bodies and the viruses remaining in the body fluids would be well preserved. ”

……

……

After about half an hour of walking in the humid and warm mud, the area covered by vegetation was shrinking, and patches of bare black mud appeared on the ground, and red stones the size of palms were scattered on the mud. Ning Yun picked up two pieces casually, the stones were still warm, the hardness of the stones was not high, and Ning Yun's thin fingers easily left marks.

Flip the stone over, and an unknown pink bug happens to emerge from the hole inside the stone. The fat man unconcernedly pushed the bugs away and picked them to the ground. The back of the stone is very flat, and there are patterns carved on it.

"You see, the stones here are so strange, with patterns on them." Looking closer, this stone does have traces of human carving, and the carved pattern is like a human face map, and the charm makes people feel weird.

If these red rocks were deliberately stored here, there would be more than that. Han Qingxin set up the stretcher and rummaged through several stones in a row, and the bottom was also patterned, and the expressions on each pattern were different, and he didn't know what the meaning was.

Yang Xi followed the end of the group all the way, not saying a word, ignoring their actions.

"Whatever that stuff, let's keep walking." The swamp forest is not far from the sand-buried ancient city, this was once the area of activity of the inhabitants of the ancient city, and the information obtained sporadically before shows that the ancestors here are good at advanced biotechnology, so they will more or less leave traces of their lives, and the seven rooms are unwilling to get involved in other troubles.