Hey, my lady here will recommend a few good underworld novels to you. I'm sure they won't disappoint you! The first one is " Crazy Concubine ", an ancient romance novel. The plot is wonderful and emotional, and the author Ren Xiaoyao's writing style is even better. The second one is " Ancient City of Extinction ", a modern romance novel about the underworld. The author's writing style and unique setting will definitely attract your attention. The last one is " Training the Cool Gangsters ", a modern romance novel about the rich and powerful families. The author's writing style is very popular with readers. I hope you like these recommendations and find a good book that suits you.