A reader takes a book from a shelf of the Tongzhou District Library on May 7. On the same day, the Tongzhou District Library in the sub-center of Beijing officially reopens. After the opening, measures are taken, including the current restrictions and a reservation system, with only online reservations acceptable. 120 readers can be received each day (60 in the morning and 60 in the afternoon). (Photo/Chinanews.com)