Peter Wu Guosheng was a Chinese Catholic catechist born in 1768 in Guizhou. Originally an innkeeper known for his sense of justice and care for the poor, he converted to Christianity after meeting a layman named Xu. Although he initially attempted to force his guests to convert, he later learned more appropriate ways to share his faith in Chongqing. Following his baptism in 1796, he returned to his home region to evangelize, helping the local Catholic community grow significantly before his death in 1814.