The Three Pillars of Chinese Catholicism refer to three Chinese converts to Christianity, during the 16th and 17th century Jesuit China missions: Xú Guāngqǐ of Shanghai Lǐ Zhīzǎo of Hangzhou Yáng Tíngyún of HangzhouTheir combined efforts helped lead Hangzhou and Shanghai to become centres of missionary activity in late Ming China. Wikipedia