Paperback. Pub Date :2013-08-01 Pages: 21 Language: Chinese Publisher: Beijing Language and Culture University Press. The Chinese Library Series is a collection of graded readers for students studying Chinese There are 6 levels available in this series. graded according to. the vocabulary used. Each reader is accompanied by exercises. A Chinese-English word list makes it easy for students to work independently. A free CD-ROM included narrates the text with subtitles.