Sòng​sì​dà​shū

Four Great Compilations

宋四大书 (宋四大書) Sòng​sì​dà​shū
Four Great Compilations
The four great compilations of the Northern Song dynasty: Extensive Records of the Taiping Era, Imperial Readings of the Taiping Era, Prime Tortoise of the Record Bureau, and Finest Blossoms in the Garden of Literature.

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Definitions
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