Xú Yòngxī 徐用錫 (1656–1737), zì Tánzhǎng 壇長, hào Zhòutáng 晝堂, was an early-Qīng Lǐxué official and pupil of Lǐ Guāngdì 李光地. Native of Sùyù 宿豫 (Jiāngsū). Edited (with Lǐ Guāngdì’s grandson Lǐ Qīngzhí) the Róngcūn yǔlù 榕村語錄 (KR3a0114, the yǔlù of Lǐ Guāngdì). CBDB id 86875.