A small boat set off from the shore of Tianchi Lake and headed towards the center of Tianchi, rowing the Huo family brothers, on the boat, Zhang Yi, Wang Yunfeng, Nie Qingchen and Master Guangzang Fahong respectively looked at the water.

The snow had stopped in the morning, and now a mist was wafting on the water, and as the boat sailed, only a faint ripple emanated from the calm lake.

Looking at the depths of the lake like a giant beast with its mouth open, Zhang Yi couldn't help but say, "Old man, do you really want to go down?" ”

Wang Yunfeng said lightly: "There is a huge underwater ice cave in the depths of the bottom of this lake, the entrance of the ice cave is upside down, only two people are allowed to pass, the wind blowing inside is reversed, the wind is very strong, the pool water can not enter the ice cave, so there is no water in the ice cave, at most when the water is launched, the cold air of this water is a little cold, as long as you enter the ice cave, it is not so cold." ”

"Huh? Underwater ice caves? Zhang Yiqi said.

Nie Qingchen said on the side: "Yes, otherwise you think that I have been immersed in water for so many years This ice cave is unusually huge, like a huge curved water pipe, the entrance is facing down, and the other end is deep under the bottom of the water, I have been in the ice cave for so many years, borrowing those cold qi to heal." ”

After a while, the boat stopped in the center of Tianchi, and after the Huo family brothers put down the pulp, Huo Tiandu looked at the four of them: "Senior Wang, Senior Nie, Master Fahong, Brother Zhang Yi, you go down, we will wait for you above, we will always pay attention to the movement of this water, and when you come up, we will row over to pick you up." ”

"Would you like to go down and have fun together?" Zhang Yi suddenly laughed.

Huo Tianyun smiled bitterly: "I want to go down and play, but the depth of the bottom of this heavenly pond is more than 100 meters, and it is extremely cold, with our strength, we can't hold on to the bottom of the pool." ”

"So that's the case" Zhang Yi suddenly said, indeed, the Huo family boxing practiced by the Huo family brothers belongs to external skills, without the assistance of mental formulas, there is not much internal force at all, unlike them, who are martial arts masters who cultivate both inside and outside, with deep internal strength, even if they can resist the cold air of this pool of water, they can't hold their breath and stick to the depths of the water at all.

Wang Yunfeng said lightly: "The lower this pool water goes, the colder it gets, and the coldness at the bottom of the pool is about five times colder than the temperature at the top of the Tianshan Mountain, so when you go into the water for a while, you have to gradually increase your internal force, and you must not be frozen by this pool water." ”

"Five-fold?"

Zhang Yi's eyes widened, a little incredible, when they went up the mountain before, on the snow slope where they encountered an avalanche, the temperature there was extremely cold, and they had to consume a lot of internal force to resist the cold, not to mention the temperature on the top of the mountain, the cold at the bottom of the pool was five times colder than that?

Zhang Yi feels terrible when he thinks about it.

"Eight times more at night." Nie Qingchen added, and then said: "Okay, it's time for us to go into the water, and the speed after going into the water is a little faster, so that it can also save a lot of internal force." ”

With the sound of four 'poofs, the sound of falling into the water, Zhang Yi and the four of them jumped into the water one after another, and they all held their breath and went to the bottom of the water, and disappeared after a while.

After Zhang Yi and the four of them entered the water for a while, the Huo family brothers shook their oars and rowed towards the shore.

Huo Tianyun said strangely while paddling the oars: "Big brother, is there really an ancient divine weapon Xuanyuan Sword at the bottom of this Tianchi?" ”

"I don't know, but Senior Nie has been recuperating at the bottom of the pool for more than 20 years, and Senior Wang often goes into the water to find him, they say yes, then there must be" Huo Tiandu shook his head, they stayed on the shore of this Tianchi Pond and accompanied Nie Qingchen at the bottom of the pool for more than ten years, but they never knew this news, if it wasn't for what Zhang Yi said last night about the purpose of their trip, neither of them would know this secret.

Huo Tianyun said with a hint of yearning: "That's the ancient divine weapon Xuanyuan Sword that has disappeared for thousands of years, if it is really at the bottom of this Tianchi and is taken out by the old predecessors of Wang, it will really be regarded as seeing the light of day again." ”

"The Xuanyuan Sword is the number one divine weapon in the Huaxia Kingdom, and only martial arts wizards such as Wang Lao, Nie, Master Fa Hong and Zhang Yi Brothers are qualified to have them, if this kind of divine weapon is in their hands, the power it exerts is unimaginable." Huo Tiandu smiled slightly, at this moment, he couldn't wait to see the dignity of this divine soldier who was about to be born.

Underwater, Zhang Yi followed Wang Yunfeng in front of him and the three of them quickly dived towards the bottom of the pool, when he just entered the water, the bottom of the pool was pitch black, and he couldn't see anything, even if he was worthy of eyesight, he could only see a distance of a few meters below, and as Wang Yunfeng said, the more he dived, the more he felt the coldness of the pool water, and the coldness hit the body inch by inch, which also made him shiver from time to time, and from time to time to improve his internal strength to resist this cold.

The four figures were like four swordfish, quickly diving towards the bottom of the pool, and now no one could speak while holding their breath, so Zhang Yi's eyes didn't dare to move at all, for fear of losing the three of them.

After a while, the four of them had already dived to a very deep place, although the pool water was getting more and more icy, but the environment was getting brighter and brighter, and finally, Zhang Yi could see more than ten meters underwater.

After diving for a while, a huge iceberg appeared in Zhang Yi's sight, and at this time, he could already see the environment at the bottom of the pool from a distance, it turned out that all the underwater icebergs under the bottom of the pool were underwater, and the raised icebergs stood at the bottom of the pool, and the range was so large that it almost occupied the entire central position of the pool. The bright light around is also emitted by the ice at the bottom of the pool, and the entire bottom of the pool can be seen almost unobstructed.

Finally, the four of them swam to the bottom of the pool, continued along the ice at the bottom of the pool, and dived quickly towards the center of the two icebergs not far away.

Looking at the shiny icebergs standing beside him, Zhang Yi couldn't help but sigh, this is really a miracle of nature, the formation of this Tianchi should be a glacial valley, because the half-moon-shaped shape of this Tianchi looks like a valley, after hundreds of thousands of years, millions of topographic changes, this valley naturally slowly accumulated water, and then the water surface rose, flooding the entire valley, forming today's Tianchi.

Soon, the four of them swam between the two icebergs, and after swimming here, Zhang Yi felt that the speed of the water here was very fast, and he could almost see the frequency of the flowing water shaking, just like seeing the current of a stream fluctuating on the shore.

A giant icicle with a diameter of more than a man rose from the ice at the bottom of the pool, spanning between the two icebergs, except that the giant icicle was curved and pointed upside down at the end.

This icicle is the entrance to the ice cave at the bottom of the pool, which is hollow, and through this hollow icicle, you can enter the ice cave at the bottom of the pool.