Zhāng Shìchén 張世臣 (fl. Northern Sòng) — Sòng obstetrical compiler whose Lěiyòng jīngxiào fāng 累用經效方 (also given as Lěi yòng jīngxiào fāng) is preserved within juǎn 4 of 朱端章 Zhū Duānzhāng’s Wèishēng jiābǎo chǎnkē bèiyào (KR3ei056), together with 李師聖 Lǐ Shīshèng’s Chǎnyù bǎoqìng jí (KR3ei076). The work survives only through this single textual witness. Not in CBDB.