Dusk, not sunset, in the Neptune 7 colony.
The distant sun is just a dim point of light at the edge of the field of vision here. The so-called "dusk" is the gradient program of the artificial sky in the colonial dome - the dark blue sky is slowly immersed in the silver glow of the star ring, simulating a certain optical phenomenon called "sunset glow" in the Earth era. Under the dome, the giant "ring gravity field" is like an upside-down mountain range, suspended three hundred meters above the ground. Its bottom sparkles with complex energy patterns, which occasionally briefly light up with geometric patterns like Mayan numbers, and then quickly go out, like the breath of some ancient civilization.
Shi Yan stood in front of the floor-to-ceiling window of the data analysis room, holding a cup of synthetic coffee that had already cooled down.
His sight passed through the double-layer reinforced glass and landed on the suspended gravity field. A training match was taking place on the field - two teams wearing lightweight kinetic energy suits were moving rapidly in a low-gravity environment. Every time the special sneakers under their feet hit the translucent energy floor, a circle of light blue ripples would sway. The football, or the "star core ball" that looks like a football but has a built-in gravity adjustment core, draws irregular arcs in the air, sometimes accelerating and sometimes stopping suddenly, violating the laws of motion known by every classical physicist.