Zhāng Yáo 張瑤 (hào Yìyún 藝耘, late Qīng / early Republic). Disciple of Zhōu Shǒurú and transmitter of the Yìjīn jīng / Xǐsuǐ jīng lineage; arranged for the 1930 lithograph reprint of the surviving Zhōu Shǒurú manuscript and wrote one of its prefaces.