Having flown through the Pacific Islands reasonably extensively I can attest that the Chinese are very active with their "Aid" program. The difference between aid from China and that from Aus/NZ is that China expects a lot more in return especially when it comes to fishing rights. When I was in the Marshall Is the Chinese had made a deal to fish the territiorial waters outside 5nm from land. Problem was they trawled well inside 5nm in contravention of the deal and ignored protests from locals. Had the locals been bothered to fish to feed themselves (they weren't) their stock would have been severely depleted.
better the devil of Aus/NZ aid than China I think, but then they haven't as much bribe money I guess.