This piece, from a series exploring Chinese IT, focuses on the rise and evolution of bike-sharing services in China. It explains how these services, initially seen as solving the "last mile" problem, exploded due to heavy investment and intense competition between companies like ofo and Mobike. Despite facing issues like excessive numbers of abandoned bikes and significant financial losses for major players, the author argues that the business was not simply a bubble that burst. Instead, it has stabilized at a sustainable level, with services like Hello Bike emerging and now being used by citizens as a practical form of public transport. The text also details the initial innovative business models and the strategic missteps and market forces that led to the industry's initial struggles and subsequent adjustments.