You know, right on the edge of the swamp, Ning Xiaofan has seen several crocodile-like creatures roaming the swamp. Moreover, they are surprisingly large. They are probably more than three times larger than crocodiles. Since the swamp is impassable, the two of them have only two routes left. One is to cross the grassland and return to the virgin forest, the other is to go into the nearby mountains and take a detour through the mountains. As the saying goes, never go far, Ning Xiaofan would not foolishly go back to the terrifying primitive forest, so he took Li Wanting to climb up the mountain. The mountains are majestic, but this is just a visual effect. In fact, the peaks are not high, and the altitude is only about three to four hundred meters. It took about an hour for the two of them to climb up the first mountain and follow the slightly gentle mountain ridge. , when I was about to enter another big mountain, a sound of rushing water and roaring faintly came from diagonally ahead. Is there water in front? Ning Xiaofan pondered for a moment and immediately called Li Wanting to go in the direction where the sound of water came from. The mountains are undulating and there are no fixed signs. Ning Xiaofan plans to find a mountain stream and then follow it. This way, he can ensure constant drinking water and have a route that can be used as a reference. Not far away, the sound of rushing water became clearer, and the accompanying roar became more and more deafening. When the two of them walked around a huge rock lying in front of them, they felt the moisture hit their faces, and their expressions were suddenly stunned. They saw a giant canyon in front of them. On the opposite side of the towering canyon wall, a gap was about a hundred feet wide. The huge waterfall comes into view. The hundred-foot-wide waterfall forms a huge white wall of water, roaring down with amazing momentum and breathtaking views. Below the waterfall, there is a rapid river nearly thirty feet wide. The roaring waterfall hits the river and splashes huge water. The tumbling water vapor spreads from the other side of the canyon to the area where the two of them are standing. . No mountain stream was found, but a rushing river was found. Of course, this did not affect Ning Xiaofan's planned route. Regardless of the main line sign or the terrain along the way, since entering the tiankeng, the terrain has been trending downward. In other words, it has been heading deep into the center of the earth. Therefore, it is absolutely not wrong to go down the river. . The two went down the steep slope to the edge of the river bank, and then swam down the river bank. The river bank was overgrown with bushes and weeds. The two of them did not have machetes to clear the way. One foot was deep and the other was shallow, so it was quite difficult to walk. The river meandered, and the water was very turbulent at first. However, soon after, a huge backwater bay appeared. At the end of the backwater bay, there was an additional tributary, and the water gradually became gentle. Although there are more tributaries, the direction of the main waterway does not deviate from the main line, so there is no need to change the route. The two of them still walk along the river bank. After continuing to walk hard for a while, Ning Xiaofan suddenly remembered something, slapped his forehead and said, "I'm so damn stupid." "Xiaofan, what's wrong?" Li Wanting looked at him in confusion. Ning Xiaofan pointed to the river: "Sister Ting, the water in this river is gentle. We can make a raft and go down the river. It will be much easier. I didn't even think of this. What else is it to be stupid?" Li Wanting It suddenly dawned on him, he pursed his lips and smiled and said: "It's not too late to think about it now. Besides, didn't I think of this? Isn't that stupider than you?" "Well, I didn't mean to say you were stupid." Ning Xiaofan said sarcastically. "I know, I don't blame you" Li Wanting first threw a flirtatious look at him, and then said after a slight pause: "Xiao Fan, have you ever thought about what if there are cannibals in the water? What to do about the strange fish? " Li Wanting recalled the strange fish she encountered when crossing the river a few days ago, and she still has lingering fears. "Don't be afraid. Last time we took a rubber boat. This time we made a wooden raft. I think even if there is a piranha fish, no matter how sharp the teeth are, it won't be able to chew hard wood" "But we don't have the tools to cut wood. Yeah" Li Wanting raised a question. "Well, this is a bit. In this way, there are quite abundant forest resources in this canyon. Let's search nearby to see if we can find some broken long trees. There are only two of us, so five or six will be enough." The two agreed and entered the woods next to the river bank to look for wood to make a raft. Ning Xiaofan's idea was relatively naive. The two searched for a while. Broken branches and leaves were everywhere, but there was not a single piece of wood used for the raft. Even if there were broken trees with suitable shapes, they were already decayed. Too bad. Fortunately, due to the terrain restrictions of this canyon, there are many trees as thick as a bowl, small and small, but they can still be used. Ning Xiaofan has no choice but to focus on these small trees. There are no cutting tools, only a dagger. However, this dagger has good functions. It is an American-made military type and is a classic version recognized by military fans. The 310mm long, 37mm wide, and Umm thick knife produced by HHCK is made of special steel as raw material. The blade part has undergone special heat treatment, making it super hard and extremely sharp. Since it is a classic dagger sought after by military fans, it naturally has multiple uses. The back of the knife is designed with serrations, and the angle of the serrations is so clever that it can saw through the outer shell of an aircraft. There is also a small round hole at the front end of the dagger, which can be combined with the scabbard to form pliers, which can be used to cut barbed wire or wires. In addition, there are some openings. Beer bottles, and the small function of unscrewing screws. Using the saw teeth on the back of a dagger to saw a big tree is obviously an exaggeration, but it can still be used to saw a small tree. Ning Xiaofan chose a tree with a bowl-shaped mouth. He first used a sharp knife to cut a notch, and then used a sawtooth to pull it back and forth along the notch. In less than ten minutes, the sharp saw teeth cut two-thirds of the gap in the tree. There was no need to finish sawing. He kicked it hard, and with a "click" sound, the tree as thick as a bowl collapsed. . The trees were only as thick as the mouth of a bowl, and the roots were obviously not enough. Ning Xiaofan cut down 14 of them with saws and belts before stopping. Finally, the branches and leaves were removed, one layer of wood was overlapped into two layers, and some strong vines were found to bind and twine. It took almost three hours to complete a rough and crude raft. After the raft was ready, Ning Xiaofan was very tired. He looked at his watch and saw that it was already past 8 o'clock in the evening. Although there is no alternation between day and night in the underground world, according to the previous schedule, it is time to find a place to camp at this time. This canyon has a river on one side and a steep slope on the other. Due to terrain restrictions, the woods on the slope are not large, so I haven't seen any ridiculously large creatures. Ning Xiaofan didn't waste much time and found a nearby sunken rock nest similar to last night to build a tent. While Li Wanting was decorating the inside of the tent, Ning Xiaofan dragged the raft to the river and put it into the river, and then put it in the river. A vine attached to the raft was tied to a large tree to prevent the raft from floating away. I believe that after a night of inspection, this extremely rough-looking raft will not sink and can be used with confidence. After dinner, Ning Xiaofan and Li Wanting got into the tent early and rested. Just like last night, they hugged each other and fell asleep. They still maintained restraint and did not have any sexual intercourse between men and women. However, Li Wanting still stretched out her slender hand to hold Ning Xiaofan's impulsive manly things out of habit. In her heart, she naively thought that this would make the little man feel better and would not hurt her body. As everyone knows, her soothing gestures can only make Ning Xiaofan harder After a night of silence, the next morning, the first thing Ning Xiaofan did when he got up was go to the river to see if the raft was still there? Fortunately, the rough and ugly raft was floating on the river. The wood used for the raft is only a little thicker than the mouth of a bowl. Half of the lower wood is immersed in the river water, and the upper surface is also somewhat damp. To be on the safe side, Ning Xiaofan went up and tried it. The raft had good buoyancy. Even if he stepped down hard, there was no sign of the raft sinking. It was estimated that it would have no problem bearing the weight of two people. Ning Xiaofan was secretly happy that the raft was usable, and turned back to the rock nest where he lived. After having a simple breakfast with Li Wanting, he packed up and went to the riverside. The two got on the raft and felt that the raft only sank a little and floated steadily on the river. Ning Xiaofan ignored the moisture on the surface of the raft and motioned for Li Wanting to sit down. Then he untied the vines tied to the tree, pushed the tree with a simple oar, and the raft slowly left under his feet. The river bank floats downstream With this raft, it is indeed a lot easier. Going down the river, almost no oars are needed. Ning Xiaofan only needs to hold the simple rudder installed at the tail of the raft. , can stabilize the direction of drifting. The river surface is gentle, and the speed of the raft does not seem to be fast, but compared to the difficult walking on the shore, it is several times faster. The towering rock walls along the coast stretch endlessly, one after another, and from time to time, you can still hear the roars of beasts in the distance. This situation reminded Ning Xiaofan of a famous poem - the apes on both sides of the Taiwan Strait can't stop crying, and the boat has passed the Ten Thousand Mountains. Of course, the environment Ning Xiaofan and Li Wanting live in is much bleaker and more depressing. There is no sound of apes, only the heart-stopping beast roars, and the poetic canoe is an ugly-looking raft When the water flows Fast and slow, the raft was fast and slow. As time went by, the two of them drifted for an unknown number of kilometers on this raft. This time-saving and labor-saving method of traveling is naturally the best. By noon, the two of them had no intention of stopping at the shore and planned to travel as long as possible. "It's a pity that this relaxing and comfortable rafting didn't last long. The water on the river suddenly became more and more turbulent. Not only that, there was also a faint roaring sound ahead. As the speed of the raft got faster and faster, the roar got closer and closer. Ning Xiaofan suddenly remembered the underground river he encountered when he first got off the tiankeng, and he was suddenly startled.Maybe it was a suspended area, so he quickly signaled to Li Wanting to help steer the helm, while he rowed desperately towards the shore.