 Complete the following phrase:  Despite being only being thirty years old when he retired, Zhang Honggen would eventually move to management with Beijing Youth Team in 1970. After several seasons he replaced Nian Weisi in 1977 as manager of the Chinese football team, however his reign was uneventful and he left after only a year. He would return twice to this position in 1979 and 1982 to help the team for short periods, however these were again uneventful. In the 