Yáng Chángrú 楊長孺 (zì Bózǐ 伯子, hào Dōngshān 東山), eldest son of Yáng Wànlǐ 楊萬里. Held office as Shuàidōngguǎng 帥東廣 (Pacification Commissioner of Guǎngdōng) — visible in the Chéngzhāi jí preface by Liú Wěishū. Compiled and edited his father’s collected works KR4d0266 Chéngzhāi jí, which was printed at Tōngdéxiāng in Duānpíng 1–2 (1234–1235). CBDB id 10567 (lifedates not recorded). Author and editor.