Bird's Nest Library is a public library. People can share their favorite books (literature, novels, etc. ) It's inside. When people use the Bird's Nest Library, they must consciously abide by the principle of "borrowing a book and returning a book". The earliest "Bird's Nest Library" in China was set up next to Qianmen Bus Station in tianyi middle school, Jiangsu Province, 20 14 13. This library is only 24cm*24cm*30cm in size and can hold more than a dozen books. If you take one, you can put another one in, which is open to everyone for 24 hours.