Léi Xiào 雷敩, fl. mid-5th century (LiúSòng dynasty), legendary author of the Léi Gōng páozhì lùn 雷公炮炙論 — the foundational text of the Chinese pharmaceutical-processing (páozhì) tradition. The work in 3 juǎn described detailed processing methods (calcining, vinegar-roasting, alcohol-roasting, salt-roasting, honey-roasting, mineral-stewing, etc.) for some 300 substances, establishing the technical foundation of zhōngyī pharmacy.
The work was lost in the Sòng but survives in fragments preserved in the Zhènglèi běncǎo (KR3ec009) tradition and is the textual ancestor of Lǐ Zhōngzǐ 李中梓’s Léi Gōng páozhì yàoxìng jiě 雷公炮製藥性解 (KR3ec029) of the late Míng. The “Léi Gōng” of the title invokes the legendary Yellow-Emperor-era interlocutor Léi Gōng 雷公 in the Sùwèn; the historical Léi Xiào is a separate 5th-century figure, conventionally distinguished by the variant character 敩.
No CBDB record. The relationship between the legendary Léi Gōng and the historical Léi Xiào is sometimes blurred in later sources, but modern scholarship (e.g. Yáng Mǐng, Léi Gōng páozhì lùn yánjiū, 2003) treats them as distinct.