Abstract：Su Shi's When will the moon be clear and bright ?—to the tune of Shui Diao Ge Tou was deeply influenced in multiple ways by previous poets .The origin of the last five lines,namely″Men have sorrow and joy;they part or meet again;the moon is bright or dim and she may wax or wane .There has been nothing perfect since the olden days .So let us wish that man will live long as he can !Though miles apart,we'll share the beauty she displays .″can be found in Kou Zhun's Yangguanyin .″Li″(subject) and″Li″(minor official) were of different social ranks,and they were actually on opposing sides .The subject″Li″were forced to carry out all kinds of hard labor,while the task of the minor official″Li″was guarding the frontier .When annotating the Prelude to Shuowen Jiezi,Duan Yucai arbitrarily changed″assigning subjects and rank-and-file soldiers to hard labor and frontiers″into ″assigning minor officials and rank-and-file soldiers to frontiers and hard labor .″This is an incorrect change . Literature from the past and unearthed is limited,giving birth to different conclusions as to the rhymes of ancient Chinese .It is difficult to decide who is right and who is wrong,which is also a universal dilemma in the study of ancient history and culture .
