Learn about the interesting origins of 16 (8 relating to animals and 8 relating to abilities) commonly used idioms with these leveled readers for Beginners, Intermediate and Advanced. This collection contains 2 books on idioms with animals: one is for beginners and one is for advanced learners. The other 2 books focuses on idioms about abilities with one book designed for beginners and the other for advanced learners. It is a fun way to learn and explore Chinese language, culture and history.