♦ Let us make it clearer:
Firstly, you can to Guangzhou from you country, however, you have to use visa to enter into Guangzhou.
Then, you transfer to Macau from Guangzhou which doesn't need to use your visa.
So in total, there are two times you need to use your visa in this trip. Thus you need a double-entry visa if you
► Firstly come to China mainland city from your country, visa needed