😋I recommend you three good underworld novels: 1. The protagonist of this novel was a special forces soldier with super strength. He was mistakenly entered into the underworld and eventually became a big boss in the underworld. The plot was twisted and bizarre, describing the cruelty of the gang and the grudges behind them. 2. " Black Friday ": The protagonist of this novel is a gang leader with great power and wealth. From operating the stock market to operating the gang, he struggles in the dark, but also encounters a series of unpredictable challenges and threats. 3. " Supreme Underworld ": The protagonist of this novel was a child who grew up in the underworld. He relied on his own strength and intelligence to defeat his enemies and grow into the supreme underworld. I hope you like my recommendation.