Can someone identify this ant?
In my opinion you are pretty close to the exact identification. 

I think it is Marauder Ant, which could be Pheidologeton diversus, but probably Carebara affinis as well. 

The main feature I can gother from your pictures is Venation of wings which matches with Pheidologeton diversus venation (it would probably match with affinis as well, but I failed to find the picture):



Venation match: the combo picture of the wing from the post and the wing from the reference:



This ant is known as Hong Kong inhabitant -