Liu Xin, who was chased by the black shadow to the tree, kept watching the black shadow wander under the tree, and cold sweat kept coming out. After looking at it for a while, I found that the black shadow really couldn't climb trees, and I was relieved that I was temporarily safe.

It's a pity that the black shadow has been wandering under the tree, and Liu Xin can't leave the top of the tree to look for food elsewhere, and his stomach is constantly protesting. Because the black shadow was below, Liu Xin couldn't leave the big tree, and the two sides could only consume it like this. At ten o'clock in the middle of the night, Liu Xin was also sleepy, but there was a creature under the tree threatening him, so Liu Xin had to hold on to his spirit, and if he accidentally fell to the ground after falling asleep, it was estimated that he would become monster feces tomorrow.

In the distance, the fish belly slowly turned white, and the black shadow under the tree quickly left. When the sun was fully rising, Liu Xin found that the black shadow did not return, and finally left the big tree that he had squatted all night.

Liu Xin, who had just jumped off the top of the tree, fell directly to the ground, and the hunger and long-term mental tension made Liu Xin almost collapse. Lying on the ground for a long time, Liu Xin slowly got up until the sun rose above his head.

"No, we must find food today, or we will definitely starve to death." Liu Xin dragged his weak body and continued to move forward. Liu Xin came to the edge of the waterfall again, this time he could clearly see that the downstream of the waterfall was a small river connected to the sea, and the water was clear and transparent.

Liu Xin was also very happy to see all kinds of fish swimming around in the river, and the moment he saw the fish, Liu Xin's mind appeared with fish-related memories, knowing that he could catch fish with a harpoon or a fishing rod.

Finding a way, Liu Xin returned to the jungle again to find something that could make harpoons or fishing rods, but finally found that he could only make harpoons, and the fishing rods lacked the main hooks and thin lines. What can be found now are sticks, rattans, and stones, and rattan certainly can't be used as fishing lines, because they're too thick.

Liu Xin found a stone that was almost the same, and it took a whole afternoon to grind the stone into sharp spikes and tie them to a wooden stick to make a harpoon. When the sun was about to set, Liu Xin came to the river again, and after many attempts in a row, he couldn't get into the swimming fish, and couldn't help complaining about the difficulty of catching fish.

Because of the thought of catching fish, Liu Xin once again remembered the physics knowledge he had learned before, because of the refraction of water, there was an error between the fish seen and the actual fish position, and then there was a large list of related physics knowledge.

Liu Xin, who found a way, began to try again, until it was completely dark, and Liu Xin finally caught a palm-sized fish as he wished.

Grabbing the fish in his hand or jumping around, Liu Xin finally thought of the source of fire, without fire it is impossible to cook the fish at all, if you eat it raw, there will be a lot of problems in the back, not to mention the fish bones, that is, the diarrhea in the back is a big problem.

Looking at the darkness around him, Liu Xin could only sit down helplessly, grab the fish in his hand, and wait for the sun to rise before going out to find the source of the fire. Throughout the night, the surroundings seemed to be resurrected, and bursts of beast roars were heard, Liu Xin could only curl up by the river, listen to the surrounding movements, and immediately run away as soon as there was a disturbance.

Liu Xin had already supported it again for a night, and after the sun rose again, Liu Xin stood up and began to look for something to burn. Luckily, it's right next to the jungle, and you can find plenty of dead grass, leaves, and trunks.

When he thought of fire last night, Liu Xin remembered again how to make a fire, the easiest thing is to drill wood to make fire, the materials are convenient and easy to find, and other methods are a little difficult. Relying on drilling wood to make a fire, Liu Xin finally lit a fire by the river, and after scorching the fish, he ate it hastily.

Liu Xin, who ate the fish, couldn't bear the fatigue anymore, after all, he hadn't slept for two days, and fell asleep heavily.

Liu Xin, who woke up, found that the sun was about to set, and he didn't know how long he had been sleeping, so he got up directly and came to the river to catch fish again. At this time, the sun was almost setting, and Liu Xin returned to the fire again and raised the fire.

Next to the fire, eating the charred fish, Liu Xin felt the warmth that he had not seen for a long time, and Liu Xin felt very satisfied, he could eat enough without being frozen. Fortunately, the night was not too cold, otherwise I would have been frozen and sick for the previous two days.

Liu Xin finally slept peacefully by the fire and slept very soundly. Early the next morning, Liu Xin woke up and went to the jungle to look for vines. Liu Xin made a small backpack with the vines he found, and caught some fish along the cliff where the waterfall was located, Liu Xin thought last night that he must leave here and find his own kind, so it was impossible to stay by the river all the time.

Let's start making backpacks today to decorate the fish, so you can continue on the road. Liu Xin held a simple harpoon in his hand and a vine backpack behind him, so he continued on the road.

Looking along the cliff, I slowly saw that Liu Xin was confronting a huge snake, Liu Xin's forehead also broke out in cold sweat, and his arms trembled a little and looked at the big snake opposite.

The serpent was hissing as it spit out letters, and its head was raised high. The moment he saw the snake, Liu Xin's mind appeared a memory about the snake, and the snake was ready to attack by raising its head high like this, and Liu Xin had to cheer up 12 points.

"Bang" The snake's head quickly crashed into Liu Xin, and the harpoon that Liu Xin used to block was directly broken, and it couldn't block the snake's attack at all, Liu Xin was also hit by the snake's head and flew out, and a mouthful of blood spurted out of his mouth.

Liu Xin, who landed on the ground, didn't care about the pain on his body, but turned around and ran away. The big snake was also too lazy to pursue Liu Xin, just because Liu Xin entered his territory and wanted to drive Liu Xin away. Seeing that the snake did not continue to pursue him, Liu Xin also breathed a sigh of relief, so he could only continue to move forward in a different direction.

When the sun was about to set, Liu Xin finally walked out of the jungle and came to a grassland, where there was all tender green grass, and rabbits of various colors were jumping at will on the grass. Seeing the rabbit, Liu Xin knew that this was a delicious food, even more delicious than fish, but it was very difficult to catch and not easy to catch.

Helpless, Liu Xin could only return to the jungle again, find some branches and rattans and start making the suggested beast hunting dragon. Liu Xin completed the animal trap in an afternoon and put it down directly on the grassland. At the junction of the grassland and the jungle, Liu Xin raised a fire and waited for the night to fall.

Fortunately, there are still some fish left, and Liu Xin does not have to worry about food for the time being. Early the next morning, Liu Xin went to the location of the animal trap with anticipation and found that the cage had been knocked over and fell to the ground. Liu Xin knew that the first attempt was a failure, and the weight was not enough, so the rabbit could directly escape from the beast hunt.

Liu Xin made some improvements after taking the cage back, more than doubling the weight again, and the support place was also very smooth, and it could fall off when touched. Liu Xin also found a random place to put down the animal trap again. After that, Liu Xin began to make all kinds of tools, and all kinds of tools appeared in Liu Xin's mind again, including axes, hammers, spears, and even bows and arrows.

After putting the animal trap away, Liu Xin began to make all kinds of tools, the most troublesome of which was the step of polishing the stones, which made Liu Xin grind for a whole afternoon to complete. Seeing that it was already dusk, Liu Xin went to the location of the animal trap again, this time the animal cage was actually moved far away, through the gap, Liu Xin found that there was a hare that had been yellow.

Looking at the hare, Liu Xin was very happy, and his food had fallen. Two days of grilled fish have improved Liu Xin's baking skills, and this rabbit is Liu Xin's first rabbit, Liu Liu Xin is also very careful to bake, although it is still a little dry, but it is much better than the previous burnt.

Liu Xin deliberately left a part of the hare meat as food for tomorrow, and curled up next to the fire again and fell asleep. Early the next morning, Liu Xin put away the stones that had been polished before, although they had not yet been made into tools, but they could be turned into tools by tying wooden sticks. Liu Xin didn't want to waste his labor, although it was a bit heavy, Liu Xin still carried these stones and hare meat on his back and continued to move forward.

On this day, Liu Xin found the previous river and continued to move forward in the direction of the river. When he was hungry, he took out the meat of the hare and nibbled on it, and when he was thirsty, he drank some water, and before he knew it, he was at the end of the grassland, followed by a tall field of weeds, and all kinds of rocks and shrubs. There is even a cliff.

Liu Xin decided to use this place as a temporary stronghold, and behind it was the grassland, where he could get hare meat, which solved the problem of food; Ahead lies an unknown territory. On the left is the river, on the other side of the river is the woods, on the right is the cliff to block the danger on the right, and back to the jungle to get branches and fire.

Liu Xin, who thought of it, began to prepare, first put the previous animal trap away, and then perfected all kinds of tools, and all of them were used to make various tools that day. Liu Xin also took the time to go back to the jungle and made two animal traps again, after all, one animal trap cage is not very reliable, in case he doesn't catch a hare, he will be hungry.

For the next three days, Liu Xin used tools to dig the cliff after releasing the trap every day, and in three days, he dug a small cave out of the cliff, enough for himself to hide in it. It took a week, Liu Xin finally completed the production of the stronghold, the small cave was covered with thick hay, sleeping on it warmly, and the hare skin in the past few days was also left by Liu Xin, dotted on the dry top, so that the haystack was warmer, and a few large wooden stakes were inserted outside the cave to block most of the hole.