Legend of Dragon in Mountains and Seas

In the world of mountains and seas, there is a great world of immortality where the old way of heaven has collapsed and the new way of heaven has been reborn. At the beginning of chaos, there was only one mountain and one sea in the vast world. Mountains are formed by stacking billions of caves and sky. The cave sky is a universe of its own, with sun, moon, stars, land and sea, and thousands of races inhabiting it. The sea is vast and boundless, with huge waves rolling into the sky. Giant kuns travel in groups. The Sea Clan abides by their eternal oath, not to interact with the creatures in the mountains, and keep the secrets of the seabed alone, isolated from the world. Mountains and seas face each other across the sky, and the order is often reversed. Mountains and seas form each other's heaven and earth. One day, due to a secret incident on the mountain, two overlords launched a world-destroying war. Countless caves and sky collided with each other and fell into the sea to form land. The old world fell, and the new world was derived from the corpse of the old world. A student from a foreign land strayed into this ancient world. He tried his best to get rid of the shackles of fate, but was caught up in the huge waves of the evolution of heaven and earth, and walked step by step towards the destined midpoint of destiny.