Super sekrit F/A757.
Looks like the crew have problems with Chinese place names.
BKK Bangkok - SZX Shenzhen (yellow arrow) next to Hong Kong.
Plane is heading towards Shenjing (yellow circle)
Plane seems to have sorted out their mistake and has turned towards Shenzhen.
An Air Defense Identification Zone is airspace over land or water in which the identification, location, and control of civil aircraft is performed in the interest of national security. They may extend beyond a country's territory to give the country more time to respond to possibly hostile aircraft. The concept of an ADIZ is not defined in any international treaty and is not regulated by any international body.
Taiwan's ADIZ extends quite deep into Chinese mainland and overlaps with Chinese ADIZ.
MSM fear porn.