Cheng Ju's dates of birth and death, native place, and official career are not clearly recorded in publicly available sources, and the verifiable information about him remains limited. Judging from the two works held in the collection, his writings touch on two fields: institutional history and poetry. The Lintai Gushi records the institution of the imperial library and related anecdotes; it is a note-style work of historical value that offers later readers a reference for understanding the operation of literary institutions in the Song dynasty. The Selected Poems of the Song Dynasty: Selections from the Beishan Xiaoji, in turn, includes his poems and gives a glimpse of his poetic output. In his extant works, Cheng Ju's style tends toward the plain and unadorned, with attention to facts and institutional records, and his poetry likewise avoids ostentation. The common classification places him under Eastern philosophy and ancient poetry, though this reflects how his works were received in later transmission rather than a full picture of his achievement. Given the scarcity of historical sources, details of his life and his place in literary history still await further study.
