Zhèng Chǔhuì 鄭處誨 (fl. 834–864), zì Yánměi 延美, native of Xíngyáng 滎陽. Grandson of the DézōngXiànzōng-era chief minister Zhèng Yúqìng 鄭餘慶 (746–820). Jìnshì of Tàihé 8 (834). After early service as a xiàoshū láng in the Imperial Library — the post in which he is said to have begun compiling KR3l0009 Mínghuáng záilù 明皇雜錄 — he rose through the bureaucracy to Jiǎnxiào Xíngbù Shàngshū and Xuānwǔ Jūn Jiédùshǐ (Military Commissioner of Xuānwǔ Army, Biànzhōu/Kāifēng region). His biography is attached to that of his grandfather in Jiù Táng shū. CBDB id 33161 records c_fl_earliest_year 844 and c_fl_latest_year 864. The completed Mínghuáng záilù is dated to Dàzhōng 9 (855); the Biélù of 12 supplementary entries is also attributed to him.