Zhōu Zǐyú 周子愚
Late-Wànlì-period scholar associated with the Beijing Catholic-mission scientific circle of Matteo Ricci 利瑪竇 (利瑪竇) and Sabatino de Ursis 熊三拔 (熊三拔); biographical detail otherwise sparse. He served as the bǐlù 筆錄 (literary brush-recorder) for de Ursis’s 1614 Biǎo dù shuō 表度說 (KR3f0010), the standard Jesuit-Chinese division of labor in which the European Jesuit supplied oral translation (kǒuyì 口譯) and the Chinese collaborator polished the result into idiomatic literary Chinese. His role thus places him in the broader collaborative network of Xú Guāngqǐ 徐光啟, Lǐ Zhīzǎo 李之藻, and Yáng Tíngyún 楊廷筠 in the late-Wànlì transmission of European mathematics-and-astronomy into Chinese.