The renovation of the LI City Library in Tianmu Lake involved converting an existing office building into a cultural space for 24hrs free reading, with a strong focus on reuse and respect for the original structural framework. The project introduced elements such as natural daylighting and recycled wood exterior materials, significantly enhancing the building's efficiency. This renovation exemplifies the trend toward urban sustainability, extending the building's lifespan and reducing resource wastage. It also provides a cultural sharing and social space for citizens and tourists.