From 1820 to 1839 he lived in Qing China, practiced as a physician and researched Chinese medical works.[2] He learned both Manchu and Chinese languages.[1][3] At first he had no Chinese patients, however, after he cured a Chinese monk, whom Chinese doctors considered incurably ill, he won the trust of the local people, and subsequent successful treatments made his services renowned.[1] His greatest acclaim came when he successfully cured a prince from the imperial court deemed incurably ill by local doctors.[1][2][3] In 1829 Wojciechowski was honored by the Qing court with a memorial in Beijing.[1][2][3]
In 1844, he became a professor of Manchu and Chinese languages at the Kazan University,[2] yet he continued his practice as a physician.[3]