Who is the real father?

This series is dedicated to Chinese language learners at the preparatory stage and above. Each title within this series focuses on one story that took place in China's ancient or contemporary history, and it is graded into 3 levels based on a system that relies on the foundations of the Chinese Proficiency Test (HSK) and other specific standards. For the first level, the number of terms the reader is expected to learn is 300 Chinese terms, while the total number of words in each story is 2,500 characters. In the second level, the reader is expected to comprehend up to 400 Chinese terms, and the total number of words in each story is about 3,500. As for the third level, the numbers become 550 terms and 4,500 words respectively. Number of pages: 35 pages. Cover type: regular paper. Size: 21×14.