This document discusses the phenomenon of "leftover women" in China, which refers to single, professional women aged 28-35 who have not married. It provides definitions, analyzes the situation and scale of the issue, discusses impacts like unhappiness and anxiety, examines causes such as women's independence and mating preferences, and proposes solutions like reforming attitudes and using social networks. The phenomenon of leftover women is deteriorating and impacts a significant portion of China's population.