Lu Yun (262–303 CE), known as one of the “two Lu,” along with his elder brother Lu Ji, was a poet whose works were representative of China’s Western Jin dynasty. Zhong Rong (鍾嶸), in his “Criticism of Poetry” (shīpĭn, also known as “Grades of Poetry”), evaluated Lu Yun’s poetry as being of “middle rank,” along with the other contemporary poets such as Zhang Hua (張華), Zhang Han (張翰), Pan Ni (潘尼), and Shi Chong (石崇). Zhong Rong made the following disparaging statement about Lu Yun: “Comparing Lu Yun to Lu Ji is almost the same as comparing Cao Zhi to Cao Biao. The only reason people call them “two Lu” is because they are brothers.”(清河之方平 原、殆如陳思之匹白馬。於其哲昆、故称二陸。) What aspect of the poems of Lu Yun drew such fierce criticism, leading critics to dismiss them as being below the first rank? To answer this question, one must first make a careful, detailed analysis of Lu Yun’s poems in their entirety. This paper presents a close examination of Lu Yun’s collection of poems titled Four Epistles for send and reply, made for Guan Yanxian and his wife (為顧彦先贈婦往返四首).