After Liang Zi finished my joke, he briefly told me about the use of snorkels and regulators in scuba, as well as the handling of some emergencies.

Of course, I knew that this time I was going to move in earnest, so I listened very carefully to the usual swimmer who only "dog planing".

When everything was more or less the same, Liang Zi checked each of our scuba separately, and after making sure that it was working well, he began to tie the scuba to his chest.

I saw Liang Zi's movements as soon as I put on my backpack, and I understood why he didn't tie the scuba to his back, because we both carried each other's bags, and the things inside were very important, and it was impossible to carry only the scuba on our backs, so in order to move easily in the water and carry all the items, then tying the scuba to the chest was the best way.

Subsequently, I also learned Liang Zi's method to tie up, and of course, in the end, it was still completed with his help.

When we were done, we both put on our goggles and snorkels and prepared to get into the water.

At this time, Liang Zi may still be worried about me, and once again told me that my underwater vision is very limited, and asked me to follow the water lantern light in his hand.

I patted him on the shoulder to show that I understood, and then followed Liang Zi step by step into the lake and dived.

When I entered the water, it was completely different from what I had imagined.

The first thing I felt was not the feeling of a completely weightless astronaut at all, but the pain caused by the water pressure on the eardrum, I could only pinch my nose and blow hard, then I had difficulty breathing due to not being used to inhaling and exhaling with my mouth, and then I was biting the root of my mouth with my teeth.

So at this time, I was in no mood to care about the "underwater world" in front of me, just followed the blurred figure of Liang Zi in front of me and the light in his hand, looking forward to getting out of the water as soon as possible.

Watching the light of the beam continue to sink in one direction, I vaguely felt a little abnormal, but now in this situation, I was not allowed to think about what was wrong.

While I was still in my thoughts, the faint light in front of me suddenly stopped moving, and then the water lamp shook sharply in my direction a few times, presumably he had discovered something, and I didn't bother to guess anything at this time, so I swam over with all my strength.

It was really dark underwater, and it wasn't until I almost touched Liangzi's water lantern that I vaguely saw a relatively large underwater mountain in front of me, and then I couldn't see it clearly with the beam of light that Liang Zi illuminated it with a water lantern.

It was a monkey hill that resembled a zoo, and the mountain was full of caves, the large ones were more than a man tall, the small ones were the size of bowls, and even small fish could be seen in and out of these holes from time to time.

Probably because of the lack of water lights, the caves form a strong contrast with the surroundings, and they are particularly dark, giving people a sense of fear of the unknown.

While I was praying that these caves were not some so-called "heavenly caves", with the help of the faint light, I saw that the beams had risen to the height of those caves, and began to shine into the caves one by one with water lanterns, as if looking for something in these caves. As for what he was looking for, he didn't explain it to me beforehand, which showed that he was full of confidence, so I had to swim over to see if I could help.

After struggling to float up to Liang Zi's side, he found that every time he shone into the hole, he would turn his head to avoid some small fish that were frightened by the light and rushed out of the hole, and several holes in a row were in a loop.

I watched Liang Zi's inexplicable movements, and gradually guessed this kid's intention, he was not looking for things, but testing and identifying these caves one by one, which can also be said to be looking for the "heavenly cave" in it.

Because only one of these caves is a "heavenly cave" that communicates with the other end, and the other caves are definitely just a dead hole with no water flowing.

The underwater dead hole is a unique feature, it will be inhabited by some underwater creatures as a "home", and underwater creatures are very sensitive to light, especially fish, so as long as you take a hand lamp to shine into the hole, according to the number of fish running out, you can roughly determine whether the hole is connected.

At this time, we stopped in front of a cave the size of a water tank, because the beams did not reflect after shining into this cave, and I could clearly feel a faint attraction of water in front of this cave, which completely showed that the water flow in this cave was connected, and it was likely that this was the legendary "Heavenly Cave".

Liang Zi probably felt the same thing, and reached out in front of my face to make an OK gesture.

I watched as he gestured to confirm my previous suspicions, and then he pointed to the hole and motioned to me - start the hole!