I have checked further - there were indeed Europeans Only signs in South Africa before the apartheid era. However, I have never seen nor heard of Zulu men wearing any fancy headdress other than a cap of animal skin [leopard preferred] or the typical Zulu feathered headdress which has been around for at least 150 years.
The features are not those of a Zulu either.
In Burma and Dhaka the dress has always been non-traditional, simple clothing like a loin cloth and loose shirt or bare torso.
This really looks as though it was taken in a colder climate than that. In China the headdress was pretty consistent, a cheap straw hat. Those are not Chinese features.
So, a mystery.