Chapters Four: analyze the shortages of Zheng Xuan's gloss in Guwen Shangshu Zhu.
第四章筒要分析了郑氏《古文尚害注》训诂的不足之处。
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Chapter Three: analyze the feature of Zheng Xuan's gloss in Guwen Shangshu Zhu by examples.
第三章翠例分析了郑氏《古文尚害注》的训诂特点。
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First LU Zu-qian and his Guwen Guanjian put in order teacher -student relations between the eight masters and took them as representatives of Tang-Song Prose.