Generally, you can apply to leave Hong Kong permanently. You can submit a copy of your ID card, a copy of your Home Visit Permit, an affidavit (code SD2) and a claim form for accrued benefits. Four copies will be submitted to your MPF trustee company. The affidavit and claim form can be downloaded from MPFA website or obtained directly from your MPF trustee. Remember to take the affidavit paper to the district office to take the oath ~