1970, graduated from USTC (University of Science and Technology of China).
1970-1982, worked at USTC, assistant professor.
1983-1985, worked in Enrico Fermi Institute, University of Chicago as a visiting scientist.
1985-1991, worked at USTC, associate professor.
1992-1994, worked on cosmic ray radiation at aviation altitudes as a visiting scientist in National Agency for Environment Protection, Rome, Italy.
1996-2004, worked in DIAS (Dublin Institute for Advanced Studies, Ireland) as a visiting scientist.
2004-2010, worked in NASA-JSC (Johnson Space Center) and USRA (Universities Space Research Association) for space radiation, senior research scientist and principal investigator.
2011, work in NSSC (National Space Science Center) for space radiation, guest professor.