This TEDx talk reflects on Beijing’s disappearing ancient architecture and the cultural memory it carries. From demolished city walls to lost hutongs, it explores the tensions between modernization and preservation. Highlighting both past regrets and future possibilities, the speech calls for collective awareness and action to protect heritage. Ancient buildings are not just structures—they are the roots of identity, belonging, and history. Yihan Ren is a passionate student and researcher interested in cultural heritage and urban studies. Inspired by the disappearing traces of Beijing’s ancient architecture, she focuses on the intersection of history, memory, and modern development. Through research and public speaking, Yihan aims to raise awareness of the importance of preservation and explore creative ways to balance tradition with progress. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at https://www.ted.com/tedx