A fun card set for learning four-character idioms, with illustrations for easy understanding. - Title: Four-Character Idiom Cards for Ages 0 and Up, Volume 1 - Contents: A card set for learning four-character idioms - Target age: 0 years and up - Design: Illustrated - Condition: Boxed - Included: List of commonly used four-character idioms I used these a lot when my child was young. They are old, so there is some yellowing. Please refrain from purchasing if you are concerned. Thank you for looking.