Nan Zhiqiao glanced down at the mechanical watch on his wrist, and at 5:40 in the afternoon, the bats above the canyon began to dissipate in all directions, and the sky gradually darkened. Pen | fun | pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

Nan Zhiqiao looked sideways at Ye Zhenzhen beside her, she hadn't recovered from the wonders of the sonic valley of the bats.

"Zhenzhen, does the bat look good out of the hole?" Nan Zhiqiao asked with a smile on his head.

"Well, it's beautiful, it's beautiful. ”

By the time Ye Zhenzhen finished sighing, the bats in the air had dissipated, leaving only the fiery red sunset on the horizon.

"The bats are already busy looking for something to eat, and we're going to start preparing where we'll eat and where we'll live for the night. ”

Ye Zhenzhen turned the backpack behind her, and after walking for an afternoon, she felt a lot heavier, and her things did not increase, but her physical strength decreased.

Looking around, she found that there was a cave on the hillside on the east side of the river beach, and Zhen Zhen immediately became excited, pointing to the cave and shouting to Nan Zhiqiao: "Senior Nan, look, there is a cave there, let's go and see, it should be a place to stay." ”

Nan Zhiqiao also saw the cave, but after a little hesitation, he nodded, "Okay, let's go and see it first." ”

The two of them left the river beach and walked up the slope of the canyon, which was covered with hard and bare rocks, and walked some distance, and when they were close to the cave, sparse vegetation appeared.

Walking through the low grass and trees, the two soon arrived in front of the cave, at this time the sky had darkened, and the surrounding area of the cave was severely shading, and it was dark from the outside to the cave.

Zhen Zhen was a little stunned in her heart, but when she thought of Nan Zhiqiao, she had always felt that she was timid, so she deliberately pretended to be bold, took two steps into the cave, and said loudly: "The cave looks very spacious, it should be able to live in people." ”

Nan Zhiqiao frowned, looked at Ye Zhenzhen suspiciously, and asked, "It's so dark, can you see the situation inside the cave?"

"Ahem" Ye Zhenzhen coughed dryly twice, and explained embarrassedly, "Hehe, the light is a little blurry, so I can only look at it." ”

As if not sensing the embarrassment in Ye Zhenzhen's tone, Nan Zhiqiao squinted his eyes and looked into the cave, and then took out a flashlight from the backpack behind him.

The light of the flashlight shone into the cave, and it suddenly brightened up a lot.

Ye Zhenzhen also took out a flashlight and prepared to enter the cave, but just took a step on her front foot, but her arm was grabbed by Nan Zhiqiao beside her.

Ye Zhenzhen was suddenly shocked in her heart, and hurriedly asked vigilantly: "Senior Nan, is there any danger?"

"It's not. Nan Zhiqiao's tone paused slightly, and then explained: "I have night blindness, and I have poor eyesight in dim places. ”

Ye Zhenzhen was stunned when Nan Zhiqiao suddenly explained her shortcomings, remembering that when the two got along before, she found that Nan Zhiqiao always liked to keep night lights, which was the case in the Paris laboratory, and the same was true when she took An An to spend the night at Nan Zhiqiao's house, it turned out that she had night blindness.

Zhen Zhen suddenly remembered that last night, the two of them climbed Chaoxia Peak in the middle of the night, Nan Zhiqiao didn't say that there was a problem with her eyesight, Ye Zhenzhen asked: "Senior Nan, when we were at Chaoxia Peak last night, did you not see the road clearly, it was very dangerous." ”

"I have mild night blindness, and my vision is most affected when it is night and day, and if it is completely dark, my vision is better. ”

Ye Zhenzhen, who studied medicine as an undergraduate, has an understanding of night blindness, and kindly suggested: "Eating more foods rich in vitamin A and carotin will improve the symptoms of night blindness." ”

"I was born with night blindness, which was inherited from my mother. ”

Zhen Zhen thought to herself, she seemed to have mentioned Nan Zhiqiao's sadness again, but Nan Zhiqiao didn't seem to care at all, and pulled Ye Zhenzhen and began to walk into the cave, "Okay, my eyes have begun to adapt." ”

The glow of the two flashlights illuminated the cave, which was not large, oval, only about thirty or forty square meters, and the height was no more than two people tall.

The two of them took a turn in the cave and found that the ground of the entire cave was very flat, like a marble floor of a water mill, and on the innermost side of the cave, there was a small hole half a person high that led into the ground.

"Senior Nan, there won't be snakes in this cave, right?" Ye Zhenzhen asked vigilantly as she shone a flashlight on the innermost underground cave in the cave.

Nan Zhiqiao carefully observed the cave wall with a flashlight, the stone wall was smooth, "It doesn't look like a snake cave." ”

"The walls of the cave are so smooth that I thought the snakes had smoothed them out of the hole. ”

"Is there a snake that thick?"

"Super python. ”

"You've watched too many sci-fi movies. Nan Zhiqiao paused, looked at the cave wall, and said, "Such a smooth stone wall is more like a long-term erosion of flowing water. ”

Ye Zhenzhen held a flashlight in one hand, and touched the smooth cave wall with the other hand, it was indeed very slippery, "Washed by flowing water, but the terrain of this cave is much higher than the river beach below, how can there be water flowing here?"

Nan Zhiqiao can't explain clearly, in this cave, the big hole is set with a small hole, and what is connected to the small hole is not clear, it is very mysterious.

Ye Zhenzhen glanced at the bottomless small cave, and then looked back at the dark sky outside the big cave, a little difficult, live in this cave, I don't know what is under the small hole, now go out to the cave to find another place to live, and I can't find a suitable one for a while, and Nan Zhiqiao's night blindness is not suitable for walking at night.

After hesitating, Nan Zhiqiao had already put down the backpack behind him, "Let's stay here tonight, just be vigilant at night." ”

Ye Zhenzhen is also really tired, she didn't sleep all night in Chaoxia Peak last night, and today she tossed in the forest canyon for another day, she is already exhausted, and now there is a cave, the key is that with Nan Dashen by her side, she can finally rest for a night.

The two began to divide the labor, considering Nan Zhiqiao's eyesight at night, Ye Zhenzhen took the initiative to ask to go outside the cave to find dry firewood, while Nan Zhiqiao stayed in the cave to set up a tent and prepare dinner and things for camping at night.

More than ten minutes later, Ye Zhenzhen carried a bundle of dry firewood into the cave, and found that Nan Zhiqiao had already set up the tent, and the two tents were next to the inner wall of the cave, close together, and there was a distance from the entrance of the cave and the underground cave in the cave.

Putting the dry firewood on the smooth ground in the cave, Ye Zhenzhen looked at the iron pot on the ground, which was already filled with water, "Senior Nan, are you still cooking noodles?"

"Well, beef shiitake mushroom noodles. ”

"And shiitake mushrooms, did you go out to pick them just now?" Ye Zhenzhen was quite surprised, she didn't expect to find shiitake mushrooms in this primeval forest canyon.

Nan Zhiqiao shook the bag in his hand, rustling, "It's dried mushrooms, brought from L City, Mr. Fire." ”

With the experience of picnic and fire on the river beach at noon, Ye Zhenzhen lit the fire by herself, and the firewood was piled under the iron pot, the flame gradually became larger, and the half-dry and slightly moist branches burned to produce a lot of smoke, and the smoke rose and filled the entire cave.

Ye Zhenzhen began to worry that if she lit a fire in such a closed cave, the smoke would not disperse, and she would spend her night in smoke and fire.

Suddenly, a cool breeze blew, and the smoke seemed to be guided, and it all drifted into the underground cave with the cool breeze.