You need to go to the local police station which covers your residence to get the Police Clearance Clearance, then go to a notary office to translate it into English Version, and apply for notarization at the notary office, then go to Philippines Embassy/Consulate in China to apply for authentication.

thanks a lot Ms. Elliot, i will do the things you said before i finish my contract, thanks a lot for the advice, more power.