[4] He became a scholar at the Hanlin Academy[4] and a low-ranking official at the Central Secretariat,[5] eventually becoming Vice-Minister of Defense (兵部侍郎).
[8] Both the Tang Cai Zi Zhuan and the Tangshi Jishi (唐詩紀事) give his courtesy name as Zhiyao.
[8] The theory that his courtesy name was Zhiyuan relies on the Tiao xi yu yin cong hua [zh].
[3] In literary history, Han is generally considered a poet of the so-called late Tang period, which spanned the early-ninth century to 907.
[7] His poems of other types are collected in the Yushan-Qiaoren Ji (Chinese: 玉山樵人集; pinyin: yùshān-qiáorén jí; Wade–Giles: yü4shan1-ch'iao2jên2 chih2).