Yulin University has a bookstore, which mainly deals in books for civil servants who take the postgraduate entrance examination. The books in it are cheaper than those in Xi 'an Bookstore. Last time I bought books for civil servants there, it was nearly cheaper than Second Street 10 yuan, and the service attitude was excellent. I can order books. Last time I was happy, I bought many new social science books. Buying books is actually the same as buying clothes.