Probably worth pointing out, that they're only paying the highest $$ for senior check and training guys. Your regular line driver will get about 60% of that.
The Chinese are on the march and they know westerners are motivated by money, which they have in eye watering amounts.
A very good mate of mine, mid 40's and a 73 Captain has done the sums and thinks he can earn enough in China to retire in 8 years as opposed to spending the next 20 being f&$cked royally with Australian taxes.