The scene where Tan Ci keeps looking at Wu Yin to see if she’s lying is a good character moment. He’s observant and analytical. Even when she says her memory is incomplete, he tries to read her face. That shows his personality – he doesn’t take things at face value. It also mirrors how he runs his business. I like heroes who are intelligent and cautious.
The visual of the city in the underworld is stunning: "an enormous ancient city stood majestically underground... filled with ghostly fires, and the lights of countless homes were a faint green glow." It’s a classic but effective description. It uses familiar imagery (an ancient city, a green river) but places it in a totally new context. The "Ghost Gate" being hundreds of meters high gives it a sense of scale that feels both ancient and alien. These descriptions aren't long or poetic, but they are effective. They create a strong sense of place in just a few sentences, which is crucial for a fast-paced story.