In the early - ming cao zhao composed gegu yaolun on the basis of antiquities in the family collection and objects he had seen , thereby laying the foundation for the classification and appraisal of writings on antiquities 摘要明初曹昭根据家藏和所见古物撰写《格古要论》 ，开创了古物赏鉴类著作的先河和体例。
