The organizers of the project are the subway authority, online educational company Hujiang.com and the Aizhi bookstore, which has 20 locations at stations along Main Line 2.
China Daily said the program launched officially on August 18 and "has been a resounding success with office workers. Waiting lines have developed during rush hour."
One Aizhi bookseller said, "Most people returned the books after reading, and many left a coin for our charity initiative." Another commented: "Even if some books are not returned, we believe the overall benefit is worthwhile."
Many of the books were donated by the public for the program.