It turns into a low-density gas on the surface of the earth at a suitable temperature, rises to high altitudes due to buoyancy, and is liquefied at low temperatures when it hits the end of the stratosphere. Ashydro, created by its producer Jewloday Company, is gradually burying the pure sky.
Proper light transmittance will just reduce the ever-increasing intensity of ultraviolet rays.
Thus, it becomes the protective layer of this planet.
Some people call it "the sea of canopy".
Hidden sea.
The original Luodai company injected Ashydro into the human body to transform a warrior who could control Ashydro in the body with his consciousness. His name was Yinxiu.
The protagonist of the story is an apprentice who has just undergone the transformation but cannot freely control the Ashydro in his body. He was framed and sentenced to death.
He was rescued from captivity by his former friends, abandoned his former body, and appeared with a new identity on this planet covered by the Hidden Sea.