As a player, Su's team qualified for the University Games held in the Soviet Union, but China decided not to send a team for fear of humiliation, with a Chinese selection losing 1-19 to foreign opposition earlier that year.
[1] In 1980, he was appointed head coach of the China national selection, beating North Korea, Japan, Singapore, Kuwait, and Saudi Arabia in the midst of qualifying for the 1982 World Cup.
Afterwards, Su publicized everything in a newspaper, detailing his tactics, selection process, players, and reasons for failure.
[2] He also decided to resign because he felt that he should give another domestic coach a chance.
[1] That year, he immigrated to Canada, in order to care for his mother who had cancer.