I often go to Xidan Book Building, but it's too far! The first picture is far away in the Southeast Third Ring Road, and the northern picture is far away in the south of the National People's Congress. There is an ultra-small community library here in Beichen, which is full of elderly people. There is a post office opposite Beichen Shopping Center. Just go inside!
Beichen Mall/Wang Shibei all buy books!
Then there is Wudaokou, you know? There is a bookstore with a good environment, just in the southwest corner of Wudaokou Rail Clearing Station.