Yáng Xiūzhī 陽休之 (509–582), zì Zǐliè 子烈, of Běipíng Wúzhōng 北平無終 (modern Tiānjīn area), a Northern Wèi → Eastern Wèi → Northern Qí → Northern Zhōu → Suí scholar-official, prolific historian, calendarist, and xiǎoxué compiler. He held senior court appointments through five regimes (a career-arc paralleling 顏之推 Yán Zhītuī’s): under Northern Qí he served as Zhōngshū jiān 中書監 and headed the imperial Historiography Office; under Suí he reached Tài-zǐ shǎo-bǎo 太子少保. Suí shū jīngjí zhì 隋書‧經籍志 records his Yùn lüè 韻略 (KR1j0113) in one juàn — one of several brief rhyme-handbooks circulating in the immediate pre-Qièyùn generation. His Yùn lüè was lost in the Sòng; reconstructed in CHANT. His standard biographies are Běi Qí shū 北齊書 42 and Běi shǐ 北史 47. CBDB has no matching pre-Táng entry.