Yun Yang took the four of them up the mountain to catch wild things, while Professor Schiller and Yoshimasa Kubo commanded people to search for underground rivers with underwater robots.

Professor Schiller and Professor Sun stared at the screen, only to see that the deeper they got into the swamp, the fewer fish and shrimp appeared below. This is also normal, after all, there is less food in the lower layers, and fish will not go to such a depth of more than ten meters to feed.

The two underwater robots searched from east to west, one south and one north, but no traces of the underground river have been found so far.

Professor Sun and Professor Schiller were both a little puzzled, and so was Cao Xiang, he glanced at the two professors and said, "The swamp is going northwest to southeast, and it stands to reason that if there is a dark river, it should be in this direction." And two professors, you see, this is Hulu Ridge, and its mountain range extends into the swamp on the northwest side, the underground dark river, and it is most likely that this should be the place. ”

Professor Sun and Professor Schiller looked at the satellite images spread out, although they also thought that this should be the case, but it was difficult to draw conclusions until they found it.

Yun Yang and Zhao Jinyang stepped on the young grass that had just sprouted, bypassed the bushes and thorns, and walked towards the mountain.

The pine and fir trees did not die in one winter, but the ground also shed a layer of dead leaves.

In the bushes, you can occasionally see paths where unknown wild animals come out.

Lin Yan and Lin Miao asked Yun Yang curiously, "Brother Yun Yang, what did you get out of here?"

"It's rats, and if you look at the footprints in the dirt, they're all paw prints. Yun Yang pointed to a path under the reed ferns, and on the dirt, the paw prints on the smooth ground were clearly visible.

"It is not clear whether this is the path of the fox or the weasel, but there are pheasant feathers in the thorn bushes, which they have seized and eaten. ”

"This should be the road that snakes often visit. When passing by a ridge, Yun Yang looked at the lush ferns and thorn bushes in front of him, and said to a few people.

"What kind of snake?", Zhou Ran asked curiously, lowering his head to carefully examine the smooth path.

Yun Yang shook his head, "I don't know, but this snake won't be small." ”

A few people left, and then in a lush reed fern growing place on the mountainside, several people found a lot of traces of wild things.

"Brother Yun Yang, is this a trace left by a pheasant?", Lin Miao asked with a smile.

"Yes, look at the feathers, they were left by the golden pheasant. Also, the thorn bush, where a few holes are supposed to belong to mountain rats. Let's go, let's see if we can catch a mouse. Tomorrow I will make you a mountain rat stew of wild He Shou Wu!", Yun Yang found traces of He Shou Wu in a damp ravine.

Yun Yang walked ahead, splitting some thorns, and the four of them followed him to a large bush of thorns.

Under the ridge, there are several holes larger than fists. The entrance to the cave is full of rat paw prints, and there is no doubt that it is a mountain mouse.

"Brother Yun Yang, can you eat mice? It's disgusting!", Lin Miao said. Not only Lin Miao, but also Zhao Jinyang, they also think so.

Yun Yang smiled, "Is the bamboo rat delicious?"

"It's delicious, it's delicious!", Lin Miao replied quickly.

"This mountain rat is no different from a bamboo rat. The reason why you think it's disgusting is actually caused by house rats. House rats are not liked by everyone, and they are likely to carry bacteria and parasites on their bodies. But rats don't, they live in the mountains, just like any other wild animal in the wild. ”

"Don't think about it, wait until you get caught. Seeing Lin Miao's expressions that still seemed uncomfortable, Yun Yang shook his head.

"How do you do traps?", Zhou Ran asked.

"Can you tie a slipknot?", Yun Yang untied two vines from a pine tree and tried it, and it was quite strong.

Zhao Jinyang was stunned for a moment, "Is this vine okay? Even if the mouse catches it, it will bite off, right?"

Yun Yang glanced at Zhao Jinyang, nodded and said, "If you tie its body or tail or something, it will indeed let it escape." I want its head, though. ”

This requires skill, Yun Yang looked around the cave entrance for a while, and then made seven or eight slipknots out of vines and arranged them around.

"Let's go, we'll know if we can catch it early tomorrow morning. Yun Yang said to everyone.

Leaving here, the five found several rat nests nearby. Judging from the discarded pine nuts and wild fruits at the entrance of the cave, there are still a lot of mountain rats.

Yun Yang taught the four of them to set traps, and Zhao Jinyang and the others had a lot of fun.

Soon more than an hour passed, and the four of them felt a little tired, so they sat on the ground without urging Yun Yang to continue searching.

Yun Yang didn't feel anything, and when he turned his head to look, he found a clump of hardwood!

"Good thing!", Yun Yang's face was happy.

"What to do?", Zhao Jinyang said curiously.

"Bow and arrow!", Yun Yang replied loudly.

These hardwoods are excellent trees for bows and arrows. A hardwood the thickness of a baby's arm can be cut with two or three knives with Yun Yang's strength.

Not only is this hardwood extremely tough, but it is also extremely elastic when bent. Yun Yang cut down four, and by the way, he found a clump of miscellaneous trees the thickness of his little finger nearby, and cut them down to make arrows.

"We brought crossbow arrows, right?", Zhao Jinyang asked Zhou Ran.

Zhou Ran rolled his eyes, "Stupid, no wonder it's called a big fool!"

Zhao Jinyang was angry when he heard this, "You are a second joke, believe it or not, Lao Tzu beat your mother so much?"

Zhou Ran disdainful: "Cut, with your physique, known as the imperial capital for ten seconds, I will beat you two by one!"

"Damn, you seven-second gunner, embarrassed to talk about me!"

Yun Yang smiled bitterly at the unnutritious conversation between the two, and got the hardwood ready, and then found two old trees that could peel off the bark, and peeled off a lot of tough bark, and used them to make bowstrings.

When he walked back, Zhao Jinyang pointed to the thorn bushes not far away, "Pheasants! ”

"That's a long-tailed bird, big man!", Zhou Ran lost Zhao Jinyang from time to time.

"Second jose, the bow and crossbow can't be used in front of Professor Sun and them, let's use the bow and arrow to compete later, and if you lose, you will admit that you are a coward!"

"I'm afraid you're a puppy!"

Lin Yan and Lin Miao were already accustomed to it, and the two of them were very curious about Yun Yang's simple bow and arrow, and squatted to the side to watch.

After burning a fire, Yun Yang first roasted the hardwood, and then dried the peeled bark. Picking up the hardwood, his hands bent into a half-moon shape with all his strength. After the bark was tied at both ends, Yun Yang tried it, not to mention, it was quite elastic and strong. It's not a problem for an arrow to shoot twenty or thirty meters!

After making three pairs of bows, Yun Yang simply sharpened a dozen arrows. Zhao Jinyang and Zhou Ran took bows and arrows, found a tree and tried it, it was not bad, ten arrows could shoot six or seven arrows, and the power was not bad!

Seeing that the sun was about to go down, Zhao Jinyang and Zhou Ran were eager to try, urging Yun Yang: "Let's go, hurry up, if you can eat a flower chicken for dinner, just look at this bow and arrow!"