1:23 a.m., Jan. 1, 2015- It was the first anniversary of love between Cao Jinxun and his girlfriend. They printed the photos of the last year as the gift to each other. (Photo/China Youth Daily)
Four study rooms in Renmin University are open to public every day from 7 p.m. to 5 a.m. They have become the most popular study rooms in the university.