Instead of going to China or Korea etc try and get a job in a private school here in the UK.Better paid than state school if you need the money for your retirement and more discipline in the schools, which aids a teacher’s life.
Retiring and living frugally in money from downsizing after years of stress

, and you don't have to pitch your tent in flood zones, fire zones or hob-knob with snakes or crocs.! Sweet Dreams!