In fact, it's one of the best 3D animations in China in recent years, and has won awards. It tells the story of an apocalyptic setting in which the last remaining human beings live in a lighthouse in the sky. In order to continue the human civilization, the lighthouse made a lot of rules, such as "free love" is forbidden, and according to genetic optimization, people are divided into upper class and dust people, in order to survive, people must regularly go to the ground to find some goods before the end of the day. There are many evolved monsters on the ground, and getting supplies is not an easy task, which is usually done by "teams of hunters". Although love is forbidden in the lighthouse, it is impossible for human beings to be without emotion, many people actually have loved ones, and so does the protagonist. At the end of the story, love violates the rules and causes the survival of the lighthouse, which has a very important reason. I can't reveal the plot, you need to watch the story until the end to know why love is forbidden in the lighthouse, and the ending is tragic.
Meanwhile, there are a few humans living on the ground who, unlike the people in the lighthouse, have been studying the monsters and have acquired special powers. In the 16th episode of the anime, you will see amazing fight scenes. These people are based on the idea that in order to regain control of the ground, humans must evolve into "new humans". There will probably be a combination of Oriental magic and supernatural powers, which will probably start to appear next season.
Overall, it's a bit of a game CG style, but it's definitely worth watching because the graphics are smooth, the story is good, and many of the plots are gripping and worth thinking about. I read Anime in English in gogoanime.gr, and maybe the translation isn't very good, but at least it's in English, albeit pirated. The legal version is only in Chinese and must be viewed on Bilibili's website.