i'm working as a foreign language teacher in shandong province.for the past two years, my employer has processed for me the extension of my residence permit here each time i signed the contract for another year's work.usually this occurred in the month of july after i finished a school year contract.furtheremore, my employer has expressed the desire to hire me for the next five years on a yearly basis.now my passport expires in november 2011. when is the appropriate time for me to renew my passport and where if i decide not to go back to the philippines for the next five school years?