Demonic Dragon

There were almost no living creatures living in Yanbing Lake in the North Sea before the Jiao tribe was demoted. When it's cold, the lake water is several times colder than the outside. The lower it gets, the colder it gets, and the bottom of the lake will freeze. When the weather is hot, the lake water will be several times hotter than the outside, getting hotter as it goes down, like a steamer. After the Jiao clan was expelled here, Emperor Chuang of the Jiao clan and the elders of the clan teamed up to set up a barrier. The water temperature in the barrier was suitable, and all the Jiao clan only lived in this barrier.