proof !?
LOL, proof from invader, like US's proof when they invade Iraq !?
And your mouth full with "fake", "Vietnamese propaganda", but there is:
Created by ottovonstierlitz (Wehrmacht) in Germany, May 2009
And look at how many maps draw by third party who recognize Paracel and (part of) Spartly were belongs to Vietnamese:
@Soryu ,
Prior to the Nguyen Dynasty, who had control of these islands?