Northern-Sòng scholar of Luòyáng 洛陽. He is recorded in 朱熹 Zhū Xī’s Zhū Zǐ yǔlèi 朱子語類 as the source from whom Zhū Xī obtained an incomplete copy of 司馬光 Sīmǎ Guāng’s Wēngōng Yì shuō 溫公易說 (KR1a0013) — running only as far as the Suí 隨 6-2 line and breaking off.