Chinese idioms are a unique way of expression in Chinese, mostly composed of four characters. Although highly concise and fixed in form, they usually can convey profound meaning vividly. Most idioms are derived from ancient Chinese literary works and are usually related to some myths, legends or historical events. It is difficult to understand the exact meaning of an idiom without knowledge of its origin. Therefore, learning idioms helps people better understand Chinese traditional culture. Idioms are widely used in daily conversation and literary creation. Proper use of idioms can make one's language more expressive and communication more effective.