Nan Zhiqiao turned his head sideways and looked carefully at the fluorescent spot on his shoulder, a flying insect the size of a fingernail, and the tail of the insect glowed yellow-green. Pen % fun % Pavilion www.biquge.info

Ye Zhenzhen took a closer look, the body of the flying insect with large nails was flat and slender, with a small head, two long filamentous antennae on it, a pair of transparent and soft wings half-open, and the shining fluorescence at the end of the abdomen was very obvious in the dim cave.

"Senior Nan, this fluorescent insect that can emit light looks very much like a firefly. ”

"Well, it's an aquatic firefly. ”

The two of them stood waist-deep in the water, looking up, thousands of fireflies shining in the cave, as bright as stars, Ye Zhenzhen ignored the danger of the flood and the cold brought by the soaked clothes, and sighed: "There are so many fireflies, it is too spectacular." ”

Nan Zhiqiao quickly recovered from his surprise and began to observe the surrounding situation, the two of them were in a narrow underground cave, with the faint light of the fireflies on the cave wall, they could see vaguely that in the narrow cave, there was a deep underground river in the middle, and on both sides of the dark river were some reefs, which should be the shore, and the water flow in the center was very fast, and the water near the shore slowed down.

The two of them are now at a short distance from the shore, Nan Zhiqiao looked in the direction where the two of them drifted, it was pitch black, this underground dark river seemed to emerge from the mountain out of thin air, and the karst landform was really weird.

Nan Zhi Qiao pulled Ye Zhenzhen and pointed to the shore of the reef not far away, and said, "Let's go ashore first, and then find the way." ”

The two of them helped each other to walk ashore, the so-called shore is some uneven rocks, because there is no sunlight all year round, a layer of sticky liquid is attached to the rocks, like the secretion of some bacteria, Ye Zhenzhen's feet slipped, staggered, thanks to one hand on the ground, barely standing, but the hand touched the sticky liquid on the stone, which made people feel creepy.

Because of the stumbling just now, through the rope connected to his waist, Nan Zhiqiao was almost dragged down, Ye Zhenzhen easily untied the rope around her waist and said, "Senior Nan, there is no flood here, and this rope can also be untied." ”

Nan Zhiqiao put away the rope and began to check the backpack, both of them had their backpacks, but the flashlight was washed away when the two of them dived into the underground hole, and the two of them were already considered fateful, and they were able to be washed into this mysterious cave through the underground river in the torrent.

"Ah......h

Ye Zhenzhen suddenly exclaimed.

"What's wrong?" Nan Zhiqiao immediately came to Ye Zhenzhen vigilantly, only to see Ye Zhenzhen bending her arms and touching her neck.

"South...... Senior Nan, there's a sticky mass that fell into my neck. Ye Zhenzhen's voice was full of horror.

"Let me see. ”

Nan Zhiqiao took advantage of the faint fluorescence on the cave wall and found that on the back of Ye Zhenzhen's neck, a transparent, sticky filament was attached to the skin, and there was a yellow-green fluorescent spot at one end of the filament.

Nan Zhiqiao pinched off the transparent filament with his fingers and put it in front of Ye Zhenzhen, "It's the larvae of fireflies." ”

Ye Zhenzhen wiped her neck, stared at the "firefly larvae" in Nan Zhiqiao's hand, and asked, "Do firefly larvae look like this?" ”

Nan Zhiqiao stretched out his hand and pointed to the top of the two of them, because they were on the shore, they were closer to the top of the cave, and the fluorescent spots on the stone wall could be seen more clearly.

On the side rock beside the two of them, there was a yellow-green shimmer, and under the faint light were countless translucent filaments of different lengths, which poured down from the cave wall, and each filament had many beads-like beads like water droplets, like crystal bead curtains.

Glancing at the filament on Nan Zhiqiao's hand, and then at the crystal bead curtain on the cave wall, it turned out that the filament on the cave wall had fallen into his neck just now.

Ye Zhenzhen remembered that she had seen a program about rare animals on TV before, which introduced cave creatures, among which there was a kind of firefly, in the larval stage, not only fluoresce, but also secrete filaments with water-like mucus, nearby insects follow the light, hit the silk line and can't move, firefly larvae can crawl over for a good meal, yellow-green fluorescent crystal curtain, is actually a dangerous "fishing line".

Ye Zhenzhen suddenly realized, "I remembered, it is a firefly larvae, which is introduced on TV, but this type of firefly is only found in New Zealand and Australia, but I didn't expect that there are also mountains in the area of L City." ”

"This kind of underground cave is very difficult to be found, if we were not washed into the underground river by the torrent, we would not be here, since there are insects here, it may be connected to the outside world, we look for the exit. ”

The two walked forward along the bank of the underground dark river, walked a distance of about 100 meters, the underground dark river suddenly narrowed, and the water became turbulent, and after walking a few meters away, the underground dark river disappeared into the ground stone wall, the two walked back and forth twice, and desperately found that in addition to the underground dark river, it turned out to be a closed cave.

Ye Zhenzhen sat down on the rocks on the shore a little dejectedly, shivered with cold and hunger, and said, "This is actually a closed cave, and there is no other way out except for this underground dark river." ”

Nan Zhiqiao looked back and forth at this narrow underground cave, the length of the entire cave is only more than 100 meters, and the width is only about 10 meters, now it seems that this is a section of the underground dark river, and the other parts of the dark river are still hidden in the mountain, but where the other end of the river leads to is unknown.

Ye Zhenzhen thought to herself, if she floated down the dark river, she might eventually be able to float to the ground outlet of the dark river, but how long this underground dark river is, and whether the water flow after it has a river surface that touches the air, these are not clear, in case, the part of the hidden river in the mountain is several kilometers long without a river surface, then even if the two can float out along the river, they can't breathe air, and there are two corpses going out.

Just now, I was glad that I escaped the flash flood, and I thought that I could escape by floating here, but now it seems that I have only gone from one desperate situation to another, and I may have drowned in the mountain flood in the river beach cave just now, but in this underground cave, there is no land exit, and if I stay here, I can only starve to death, and people from the outside world can't even find the bodies of the two people.

The cold wind blew, and Ye Zhenzhen sneezed in stress, "Ahh

The sound of sneezing and the cold feeling on her body seemed to make Zhen Zhen's head sober up, since there is wind, then this underground cave must be connected to the outside world, the entrance and exit of the underground dark river are closed by the water, and the wind blowing just now shows that there are other outlets.

Ye Zhenzhen stood up, looked around again, and saw Nan Zhiqiao beside him looking up at the top of the cave, and following his gaze, an intermittent stream of water dripped from the cave wall.