The world uses the "twenty-four solar terms" as the core context for the movement of heaven and earth. Each solar term corresponds to a "qi domain", and the gas domain is filled with the spiritual energy of heaven and earth with different attributes. In the Beginning of Spring aura, the vegetation is lush and green, and the aura is biased toward vitality; in the Summer Solstice aura, the red sun is scorching, and the aura is as hot as flames; in the Frostfall aura, the aura is filled with frost and snow, and the aura is cold and condensed; in the Great Cold aura, the aura is frozen for thousands of miles, and the aura is thick and solid. When the solar terms alternate, "solar cracks" will appear at the boundaries of the air domains, and the mysterious monsters recorded in the "Book of Mountains and Seas" will emerge from the cracks, which is both a crisis and an opportunity.
