Daji's words made the people of the investigation team rise up to Dongjiugou, and they asked someone to inquire about the situation in Dongjiugou. All of a sudden, everyone seemed to have forgotten the purpose of the trip.

Daji told us that there was a logging yard in Dongjiugou, but that was a few years ago, and now that the country is forbidden to log and hunt, and that logging and logging site has long been abandoned, and that area is no longer a no-man's land. A cadre who has worked in the local area for many years told us that the scenery in the ditch is beautiful, and you can walk directly to the foot of the Gongbulazan Snow Mountain along the bottom of the ditch. At the foot of the Gombrazan Snow Mountain, there are two lakes connected together, and there is a beautiful fish in the lake. A woman named Yang Jin said that she and her husband had gone into the ditch to look for Cordyceps two years ago, and the scenery inside was really good, Yang Jin said that there were many snow mountains behind Gongbrazan Snow Mountain, and she and her husband got lost there, but after a day, not a single Cordyceps was found.

We stayed in Rulang for a day, replenished some necessary supplies, and then headed for the mysterious tribe.

Before setting out, the expedition team used their GPS to find a way to the bottom of the ditch that led directly to the legendary two connected lakes. We thought it was an improvised road built in the former lumberyard, so we all took our outdoor gear and drove two cars to Dongjiugou.

Dongjiugou is located two or three kilometers east of Dongjiu Village, about ten kilometers away from Lulang Town. We crossed the prayer flag-laden suspension bridge over the Rulang River, and less than two kilometres after passing the pasture behind the bridge, we reached the edge of the abandoned lumberyard. When we looked at the bottom of the ditch from the edge of the lumberyard, we were immediately dumbfounded. The GPS showed that the road leading to the legendary two connected lakes turned out to be a huge riverbed with a river in the middle. Due to the large drop, the river flows rapidly, and the sound of water seems mighty in the valley. Looking at the situation in front of us, not to mention the car, whether we can enter the mountain on foot has become a problem.

We had to let the car and the driver go back to Lulang to wait, while all the members of the expedition team carried their own equipment down the river valley. This is the beginning of a walking tour of the mysterious tribe.

The valley is covered with large and small stones that have been washed smooth by the river, and from time to time you can see huge decaying or decaying trees, lying quietly on the rocks. We carried our heavy gear on our backs and bounced forward. We didn't go far before we were blocked by the river. Although the river is only three or four meters wide, the current speed is very fast. The clear water of the river is smooth pebbles, and when you feel the water with your hands, the water here is so cold that you bite your hands, even though it is summer. It seems that wading in the past was a bit unrealistic, and we had to find another way to cross the river.

Xiao Yu and Xiao Xiao went to the neighborhood to find suitable trees, planning to build a small wooden bridge. Ruoyu and Ah Mei and I carried forward the spirit of Yugong moving mountains by the river and filled the river with stones. Because the river was not deep, we soon filled in a small pier that looked like a decent. As I was filling in the stones, I noticed that the stones by the river had many beautiful textures, and I picked up a few pieces and looked at them carefully, and was surprised to find that the stones were actually fossilized wood. This riverbed is home to countless fossilized trees. At this time, Professor Luo, who was not far away, was holding a stone and looking at it carefully in the sun. I know that Professor Luo also found fossilized wood here. I approached Professor Luo and asked him for advice. Professor Law said that wood fossils are tree fossils that are exchanged for wooden parts after trees that are at least hundreds of millions of years old have been quickly buried underground. It retains the wooden structure and texture of the trees. The color is earthy yellow, light yellow, yellowish brown, reddish brown, gray-white, gray-black, etc. Ancient trees were buried in the ground due to geological processes such as volcanic eruptions or crustal movements, and because they were in an arid environment with a lack of water or isolated from the air, the wood was not perishable, and was replaced by other material exchange in the long geological process, and the replacement process retained the fibrous structure of the wood and the shape of the trunk, making the trees fossil. The conditions under which trees are preserved as fossils are extremely harsh, and the prerequisite for the trunk to become a fossil is that the trunk must be buried quickly, and the environment is special, and it is very rare to be buried quickly in isolation from the air, so the chance of a tree becoming a fossil is very small. After the trees are buried by sediment, the phenomenon of material exchange and substitution occurs. If the dissolution and alternation rates are equal and the molecules are exchanged, the fine structure of the tree, such as growth rings and cell outlines, can be preserved. If the alternating velocity is less than the dissolution velocity, the morphology of the tree is mainly preserved, and the growth rings are generally unclear. After that, after compaction, consolidation, and rock formation, the original tree can be completely transformed into a hard fossilized wood. At first glance, the number of fossilized wood here is staggering, and although he is not engaged in this kind of research, he is well aware of its value.

I told everyone about this discovery, and just as we were amazed at the strangeness of the fossilized wood, Xiao Yu and Xiao Xiao didn't know where to find a long wooden plank, and they came over with the wooden plank dancing on the rock.

After crossing the river, we cautiously walked along the river valley. The meandering river was a nerve-wracking stretch, and we crossed the river three or four times in less than a kilometre. Towards the end of the valley, it was past noon, and we sat down on a boulder and nibbled on dry food.

It was only at this time that we were in the mood to enjoy the scenery of Higashijiugou. The afternoon sun hung on a blue sky without a trace of clouds. Under the blue sky is the white Phurazan Snow Mountain, and under the snow-capped mountain is the lush primeval forest. A glittering river emerges from the primeval forest and passes through the silvery rocky beach. Under the warm sunshine, the wind in the mountains is wisps, which makes people have an indescribable comfort.

Each stone on the rocky beach has a unique shape and personality. We can't help but find the stones. At this time, the rocky beach, like Socrates' wheat field, makes us wonder how to choose. I found pieces of fossilized wood on the rocky beach, and watched that some of them had beautiful lines, some still stubbornly maintained the image of wood, and some of them had sleek shapes but clear growth rings. Looking at the ripples of water and the scratches of the wind on these fossilized woods, I imagined that hundreds of millions of years ago, the earth was shaking and the wind was surging. My mind travels eons ago. I imagined a seed falling and small shoots popping out of the ground and growing into small trees. The small tree is vigorous and finally towers to the sky. Then, in an instant, the sky collapsed, everything fell apart, and one of the trees rose out of the ground after being silent for eons of time, becoming a fossilized piece of wood in front of me.