Which novel was the movie "The City of Pain" adapted from?

The movie 'City of Pain' was adapted from. The novel was famous in Hong Kong. It told the story of a city that looked gorgeous on the outside but was empty on the inside. It described the interpersonal relationships, business operations, political struggles, and other aspects of the city. The novel has been adapted into movies, TV series, stage plays and other works many times. It has been translated into many languages and is deeply loved by readers all over the world.