Which practice reveals how korea under the koryŏ dynasty continued to be influenced by china?

The capital city foundation was laid out on Chinese model and the use of civil service examinations. Due to developments in bronze and iron ages, the contracts between China and Korea date back to the 4th BCE where Chinese culture spread to Korea. Peninsula spreading their art of writing, religion, ceramics, agriculture and architecture through diplomats, monks and scholars who travelled the two directions.
China provided Korea with a model for art, literature, music, dress and etiquette. 

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