Hong Kong visa
The visa is issued to citizens and residents who come to China for tourist purposes.
Visa for Saudis:
Saudis can visit Hong Kong for a period not exceeding 30 days without a visa.
For other nationalities:
They can apply via the link
Macau visa
Citizens of the United States, Canada, Portugal, and some other countries enjoy visa-free entry to Macau for tourism purposes. Please visit the Macau Public Security Police Force website for details