"Deep City" is an emotional novel with a modern urban background. It tells the story of the protagonist Feng Qihua's emotional entanglements and spiritual exploration in the bustling city. Feng Qihua is a successful lawyer who appears to be prosperous but lonely in his heart. His peaceful life was broken by an unexpected phone call. On the other end of the phone was his college sweetheart Lin Xiaoxiao, a name he thought had been buried deep in his memory. Lin Xiaoxiao's sudden appearance, along with the news of her divorce and nostalgia for the past, made Feng Qihua's heart turbulent. The two reunited at their old place, a small cafe full of memories, and started an in-depth conversation. In this conversation, they not only shared their past, but also explored future possibilities. Lin Xiaoxiao's return seemed to give Feng Qihua a new beginning. Their relationship quietly changed in the night, and the red thread of fate seemed to connect them closely again. The novel features deep emotions and delicate psychological descriptions, showing the struggle and growth of urban people in love, career and self-awareness. Through the stories of Feng Qihua and Lin Xiaoxiao, readers can feel the warmth and coldness of urban life and the complexity of human nature, as well as the desire to find emotional sustenance and spiritual destination in modern society. "Deep City" is a thought-provoking work. It not only tells a love story, but also is a profound analysis of the inner world of modern people.