Pei was born into a Catholic family in
Zhuolu County,
Hebei in 1918. At the age of 13, he entered the
Congregatio Discipulorum Domini, which was founded by Archbishop
Celso Benigno Luigi Costantini. He was ordained a priest on May 30, 1948. In 1950, he worked at Beijing Pharmaceutical Factory. During the
Cultural Revolution, he was sentenced to ten years of labor reform. ==References==