During the 1968 Olympic Games in Mexico City, Po Shun worked in the Olympic Cultural Committee helping to organize the International Festival of Children’s Mural Painting. He met Ruth Rivera, director of the Fine Arts Palace and the daughter of Diego Rivera. He lived for ten years in a house that she designed and had previously lived in. After the Olympics he joined Aluminio Deschamps SA to design aluminum and fiberglass building facades. In his spare time he painted landscapes in acrylics and had an exhibition at the Anglo Mexican Institute. He decided to apply for Mexican citizenship. In 1969 he married Poh Suan Leong, whom he met in college. She graduated in architecture and is from Penang, Malaysia.