Step by Step Chinese - Intermediate Speaking Ⅰ (with MP3) 阶梯汉语：中级口语（第一册）

Designed for foreign students who have a mastery of 2400 Chinese characters or reach HSK Level-C, the Intermediate Speaking Series consists of 4 volumes. Each volume has 14 lessons. Each lesson includes 2 ~ 3 passages, and each lesson takes 2 ~ 3 hours.