Okay so I need to talk about how this author builds a world without ever stopping to explain it like a textbook. The scene where Yuan Li is eating in the cafeteria is basically the perfect example of this. She's ordering buns—pickled cabbage and meat, big as her palm—and the serving lady recognizes her just because she's in the Cleaning Department. That's it. That's the worldbuilding. You don't need a paragraph explaining the social structure; you just see that the cafeteria lady knows who's who, and suddenly this place feels lived-in and real.
Then you cut to those gray high-chassis reinforced vehicles rolling in at night, looking like weapons on wheels, and the contrast hits you like a truck. One moment you're reading about someone's lunch, the next you're in a world where Evolvers drive armored convoys. The author never says 'this is a post-apocalyptic world with supernatural abilities'—they just show you the buns and the tanks and you figure it out yourself.
The training facility detail is also brilliant. Two separate buildings, the small one reserved for the three squads (private, exclusive), the large one open to everyone on the 11th floor which 'belongs to the medical room' and where 'not many people like to cause trouble.' That one line tells you everything about the power dynamics in this place. The medical room runs the big training field. The squads have their own private space. There's a hierarchy, there's territory, there's unspoken rules—all conveyed through a casual elevator ride.
And the squad's vehicle scene! Hong Yuan threatening to stab Jin Tong while he's driving, Jin Tong yelling 'I'm driving!'—it's funny, it's tense, and it simultaneously establishes that these people are dangerous, they don't care about normal safety rules, and they have a dynamic that's been building for a while. You don't need backstory; you just watch them bicker and you understand their world instantly.
The author's biggest strength here is that nothing feels designed for exposition. Every detail about the world comes organically from what the characters are doing and experiencing. The Focus Potion description—icy blue, surprisingly warm in her hand, only 20ml but stronger than any mint candy—these tiny sensory details make the world feel tangible. I could almost taste that potion.