自動離職.No problem! Call Chinese SS and check. If they could not fi

ask your formal employer to testify that you have worked for them for what period. Bascially if you worked for state-run company or government,shi-ye-dan-wei, they will treat the period  before 1992 as the period you have made contribution. I know a little bit about this because I worked as a programmer in Chinese SS area before I came to the US.