Transcription of Qianlong Emperor's Two Imperial Poems on the Complete Library of the Four Treasures, Including "Inscription on Mao Huang's Guide to the Tribute of Yu (Yugong Zhinan)"

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（第一則）微禹其魚功不刊。導川敷土下民安。九州既奠爰分域。四海會同永晏瀾。毛晃指南因有述。文淵闕字乃無端。焦竑志籍傳名著。朱子説書取訓鑚。千古根源率由溯。諸家附會概祛漫。獨於分野稱星宿。未識恢恢天道寛。（題毛晃禹貢指南。）（小字注。）（第二則）指南向已題毛晃。説斷兹當屬傅寅。五服九州辨貢賦。三江四海析涯垠。積年累月而窮究。繼晷焚膏亦苦辛。代易時陳因失舊。定訛補闕為完新。祇台要以知德先。紛彼奚辭注語頻。更有諸家難著筆。流沙今越海西濱。（題傅寅禹貢説斷。）（小字注。）御製題四庫全書詩。臣于敏中敬書。