Bao’an 1990 involves renovating and expanding the original Bao’an Library, Cultural Center and Theater in Shenzhen, with a total construction area of 62,601㎡. The design focus on the concept of “new sprouts on an old tree”. It emphasizes the importance of preserving original architectural form, while harmoniously integrating with new transparent volumes above ground and hidden extension underground. The project has become a pioneering example of renovating and expanding a cultural complex dating back to the 1990s.