Shelf life: A 460-year-old library welcomes mayors' books

Mayors from around the world donate books to Tianyi Pavilion, the oldest surviving private library in China, at the Global Mayors Dialogue in Ningbo, East China’s Zhejiang Province. The books tell the history and spirit of their hometowns. They come from cities such as Klang in Malaysia, Auckland in New Zealand and Suez in Egypt. The library is more than 400 years old. What stories will they add to its shelves? (Produced by Fu Junjie and intern Wang Shuyi, Cai Xinyue)