it's possible that this was a ch-7 instead?
China will not directly fly over the Philippines, it doesn't provide a tangible benefit and only gives risks of giving away signatures.
The author is simply a nationalist retard, claiming a RQ-180 flying over Philippines is "operational near China" is like claiming a Su-57 over flying Moscow is "operational near Ramstein".
Hyping up something that would be quite trivially detected and counteracted by a whole family of systems if it actually came close to Chinese airspace.