Matteo Ricci, SJ (October 6, 1552  May 11, 1610; simplified Chinese: L? M?d?u; courtesy name: X?t?i) was an Italian Jesuit priest, and one of the founding figures of the Jesuit China Mission. Xu Guangqi (simplified Chinese: 畗?; traditional Chinese: 畗币; pinyin: X? Gu?ngq?; April 24, 1562  November 8, 1633), who later adopted the baptismal name Paul (simplified Chinese: 玂?; traditional Chinese: 玂窼), was a Chinese scholar-bureaucrat, agricultural scientist, astronomer, and mathematician in the Ming Dynasty.