National Library, I often go to Baishiqiao in Haidian, and there is a branch in Dongcheng. It is convenient to choose according to the route, and those who meet the requirements can borrow seats.

You need to bring your ID card to apply for a reader's card. Reading function 5 yuan/month, 20 yuan/year. You only need to add a deposit of 100 yuan to your library card and return the book three times, with a cycle of 3 1 day. You can find books in any field you want.