https://en.wikipedia.org/wiki/Yongzheng_Emperor
Johann Adam Schall von Bell, who was a German Jesuit, went to China in 1619, learned the Chinese language in 1623 in Macau, and was later appointed into the Imperial Astronomical Bureau in 1630 by the Ming, even after the fall of Ming to the rise of Qing, Schall's presence was welcomed by the Manchu of Qing and was appointed as the head of the ...