Hi there, I has Vietnam passport but I live in USA and have 10 years green card.

Hi there, I has Vietnam passport but I live in USA and have 10 years green card. I am planning a trip to Hongkong and then visit Macau. Do I need to apply for both Hongkong and Macau Visa too? Or I only need to apply For Hongkong only since Macau and Hongkong bong to china. Could you help plz. I am traveling there in 10/2013