Zhāng Yǎnghào, zì Xīmèng 希孟, hào Yúnzhuāng 雲莊, was a native of Lìchéng 歷城 (modern Jǐnán 濟南, Shāndōng). He passed the jìnshì in Dàdé 8 (1304) and rose through a series of posts: Magistrate of Tángyì 堂邑, Censor (御史) — eventually Investigating Censor of the Censorate (監察御史) — Vice Director of the Court of the Heir Apparent, and finally (in Zhìzhì 1, 1321) Vice Director of the Department of State Affairs. He retired to mourn his father at Yánhuò 8 (1321) and refused repeated imperial summons until Tiānlì 2 (1329), when he was urgently recalled to direct famine relief in Shǎnxī following a severe drought. He travelled day and night through the affected districts, exhausted himself, and died of overwork on the road at age 60. Posthumous title 文忠. His literary corpus combines administrative writing — the Sān shì zhōnggào 三事忠告 (KR2l0021) — with celebrated sǎnqǔ 散曲 poetry, including the famous Shānpō yáng – Tóngguān huái gǔ 山坡羊·潼關懷古 (“when prosperity comes, the people suffer; when ruin comes, the people suffer”). Lifedates: CBDB gives 1270–1329; the catalog meta gives 1269–1329, but standard biographies (and the modern Yuán shǐ studies tradition) follow 1270, which is the year used here. Biographies in Yuán shǐ 175.