As a fan of online literature, I can't influence my personal preferences or emotions. But based on my understanding of these two novels, I can tell you that they each have their own advantages. " Twenty No Doubts " was a youth romance novel that told the story of a group of young people growing up. The novel involved the innocence of love, the sincerity of friendship, and the confusion of life. The characters were vivid, the plot was ups and downs, and the writing was beautiful. It was deeply loved by young readers. " Just Thirty " was an urban romance novel about a woman's growth and pursuit in marriage, family, career, and so on. The characters in the novel had distinct personalities, and the plot was twisted and moving. The delicate emotional description had aroused the resonance of many readers. Therefore, these two novels each had their own unique charm. The readers could choose to read them according to their own preferences and needs.