Hainan Airlines Flight Training center technicians. The classroom photo includes both the simulator support techs as well as local university students from Sanya Aviation and Tourism College. The training center is located in Sanya the southern most city of China on the Hainan province.
Sanya is China's equivalent of Key West FL (southern most point of the USA).
In fact near Sanya is the location that China calls "The End of the Earth".
So now I can say: "I've been to the end of the Earth and Back!"