Kindly refer to the following websites:
The Immigration Department of the Government of the Hong Kong Special Administrative Region: https://www.immd.gov.hk/hks/index.html
Public Security Police Force of the Government of Macao Special Administrative Region：http://www.fsm.gov.mo/psp/cht/main.html
Please be noted that the final decision on whether the visitor is permitted entry or not will be down to the local Immigration Department/Public Security Police Force or local Border Control Authority in accordance with individual cases.