Kindly refer to the following websites:

The Immigration Department of the Government of the Hong Kong Special Administrative Region: 

http://www.immd.gov.hk

Public Security Police Force of the Government of Macao Special Administrative Region：http://www.fsm.gov.mo/psp/eng/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.