" Just Thirty " was a novel about urban emotional life. There were three types of scumbags that women should avoid. They were: Gu Jiayuan: Gu Jiayuan is a selfish, hypocritical man who uses others. Although he loved Lin Youyou, he only pursued her for his own benefit. Whenever Lin You needed help, he would always be the first to leave without giving any support or help. In the end, he used Lin Youyou's feelings for him to put her in danger and let him get everything he wanted. 2. Chen Yu: Chen Yu is a gentle, incompetent, and irresponsible man. Although he was very loyal to his wife, he lacked practical action and ability to provide her with enough support and encouragement. He always shirked his responsibility and refused to help his wife when she needed help. In the end, his wife, Lin Youyou, encountered difficulties in her life and work. Not only did he not give her support, but he even stabbed her in the back, causing Lin Youyou to fall into a deeper predicament. 3. Zhong Xiaoqin: Zhong Xiaoqin is a hypocritical, selfish and irresponsible man. Although he loved his wife, Chen Yu, he often cheated on her and did not care about his family or marriage. He always shirked his responsibility and refused to help his wife when she needed help. In the end, his wife, Lin Youyou, found out about his crimes. Not only did he not apologize, but he also tried to cover up his mistakes and hurt Lin Youyou. I think these three types of scumbags are not worthy of a woman's true love. They were selfish, hypocritical, and took advantage of others 'lack of practical action and ability to provide sufficient support and encouragement to their wives. If a woman met them, she should leave them in time to find someone who truly loved her, cared for her, and was willing to give up for her.