“OK, so maybe the motive is ransom and they landed on some island and are now shuttling the rich Chinese to a secret location so that the military can’t intervene.”
So the plan is
1- Hijack a jumbo jet in flight.
2- Secretly fly it to a hidden location and somehow land it at a 3rd world dirt runway (undetected).
3- Hide the plane and hostages from Satellite/ radar/ electronic survellence from several major govts.
4- Blackmail the Chinese govt for money.
Yeah, that could work.
Will the hijacked passengers held captive have to pay for their bag of seven pretzel sticks and half a can of coke?