Everything underwater is silent, and you can barely hear any sound of your own swimming. Pen & Fun & Pavilion www.biquge.info

Zhao Kun looked at the barometer, and the remaining mixed air was enough for them to move forward for another 20 minutes and then return. The passages that continue forward occasionally become narrow, but at least they all allow one to pass wide and loosely.

There was something small, like fragments of feathers, floating in the water. If you look closely, it is a small piece of the residue of a butterfly's wings, the same drunken butterfly you see in the valley. The blue sheen of the wings was dim in the water, and it was possible that the corpse of one or several large butterflies had been eaten by fish.

This further proves that both the big butterfly and the saltwater fish are from another world and are connected to Yuncun by a special channel.

Zhao was eager to test the salinity of the waters, which he speculated to be close to desalinated seawater, rich in salinity and minerals. It's just a pity that there are no tools.

It's time to return, and it's a pity that the end of this mysterious waterway can't be detected today.

At that moment, his ears caught the slightest tink. Such a sound is very light and light, and it is not very inaudible on the mainland, but under the water, the sound of metal scraping is very far and very clear.

He turned his head suddenly!

Just about three meters behind Su Yan, a black figure in a diving suit was facing Su Yan and raised his gun!

Zhao Kun didn't care about other movements, kicked his foot on the cave wall, and suddenly jumped out and hugged Su Yan.

With a slight sound, from the strangely shaped barrel, a needle flew out, drained the resistance of the water, pierced Zhao Kun's shoulder, penetrated the thin diving suit, and brought a cold stinging pain.

In the slender capsule-like container behind the needle, about 1 ml of light blue liquid was injected into Zhao Kun's body through the tip of the needle, and everything was lightning fast!

This powerful weapon, apparently, was specially designed for underwater launches.

The person who fired the shot was also stunned. He didn't expect Zhao Kun's reaction ability to be so strong, and he instantly covered Su Yan, but he was shot. There was indeed a needle in the barrel, but Zhao Kun had completely protected Su Yan behind him, and he didn't dare to give Zhao Yan another needle.

Seeing Zhao Kun leap forward and almost catch him, this person finally gave up his goal, turned around and swam back quickly.

Zhao Kun knew that this person was likely to set up an ambush on the waterway back, and wait for Su Yan to pass by, and then make up for it. He couldn't take this risk underwater anyway, and right now, it was impossible to go back the way he came!

You can only swim forward.

Su Yan was so smart, she immediately thought of this layer, and she hadn't recovered from the fright of being attacked by a sneak attack, and she hadn't had time to go over to look at Zhao Kun's pinhole, so Zhao Yan gestured forward, urging her to swim forward immediately.

No one knows how many roads lie ahead, and the faster you go, the better!

As he swam, he estimated the distance. This waterway is definitely no longer under Tongyun Lake, and according to the direction, it can only be under the mountains, which is the original underground waterway. This kind of underground river can most likely pass through a single mountain, just a few hundred meters, or it can stretch an entire mountain range, hundreds of kilometers long.

But since someone deliberately maintains this underwater passage, the one-way distance should not exceed the distance deliberately supplied by a civilian gas cylinder, otherwise, the passage will become a stuffy tank that suffocates people!

One can only pray that there is no fork in the road ahead.

The people who use the waterway apparently think it's so hidden that it doesn't need to be forked, and they're lucky not to connect to other tributaries. All the way forward, it was all smooth.

Swimming, Zhao Kun's heart suddenly contracted extremely sharply!

Immediately after, half a minute later, a large wave of irregular heart contractions and relaxation arrived! Zhao Kun's breathing could not keep up with the rhythm of the heart's wanton beating, and the symptoms of lack of oxygen and insufficient blood supply to the brain hit almost immediately, and his eyes were dark, and he almost hit the stone.

Su Yan immediately noticed his abnormality and stepped forward to hug him, lest he be like a headless fly. Under the light of the waterproof lamp overhead, I saw that Zhao Kun's face was unusually pale, and his pupils were constricted, although he was still holding on, the cold sweat on his forehead could be seen in the huge waterproof mirror that covered half of his face, flowing into his eyes.

It was as if his heart was clenched by an evil hand, sometimes falling hard, alternating between dull and sharp. Zhao Kun understood that he was poisoned, and this toxin was passing through his heart, causing a violent rejection reaction!

If he goes into cardiac arrest underwater, the gods can't save him. And if something happened to him, it was tantamount to sending Yan Yan to a dead end!

Zhao Kun supported himself with all his strength and forced himself to swim forward with his hands and feet, but the darkness came one after another, as if a sweet dream beckoned, and he was awakened again and again by the pain of rushing towards his limbs like electricity! His hands and feet lost their cooperation, and he was unable to sink in the water.

Su Yan didn't hesitate, hugged him from behind, tried to hold his back with one hand, and matched his feet with the other hand, desperately paddling forward.

There was no time to cry, no time to panic, not even to pray or beg, only a sudden burst of power in her heart to support this petite girl to paddle her hands and feet and swim forward!

She has a striking resemblance to Xu Ningran's fate, she has always been protected and taken care of, but God will always give them a chance to be a hero for the person they are destined to be!

I don't know how long she gritted her teeth and swam, Su Yan felt that her hands and feet were sore and numb, and suddenly, her body was lighter, and the draping feeling brought by the water surface receded, and she found herself surfacing the water!

A medium-sized cave is in view, and the space of the black hole is illuminated by a diving headlamp, where the water level becomes shallower and the feet finally set foot on solid land.

Su Yan turned around and used all his strength to pull Zhao Kun up from under the water, quickly unfastened the diving suit that was clinging to him, and removed the mask and headlamp.

The cave was not enclosed, but not far away, and it seemed to turn a corner, faintly plunging into the faint light.

Zhao Kun had difficulty breathing, the sharp pain had turned into a burning flame in the blood, burning his nerves, the temperature of his skin rose frighteningly, but there was no trace of blood on his face. He looked in the direction of the light, and could barely speak: "Get out quickly, in case someone is chasing!"

Su Yan finally took off his and his own waterproof clothing, this wet and smooth clothes would bring a lot of inconvenience to their movement on land. Then, she vigorously lifted Zhao Kun up, supported the last bit of strength in her body, and limped along the shallow flowing water in the direction of light. (To be continued.) )