A question that often comes up is how much Chinese people earn in their jobs, and how that compares to a TEFL salary. An article in the Christian Science Monitor about the Chinese middle class states:
Those jobs earn the couple about $30,000 a year between them – not much by Western standards, but twice the average salary in Beijing and five times the national average in China.
That would put the average Beijing salary at $15,000/year, or ~¥8,100/month. Of course, that figure disregards benefits (such as insurance and pension) and undeclared sources of income. Research has suggested that Chinese have $1.5tn in hidden income, so figures such as the above must be taken with a grain of salt.
The average salary outside of big cities of ¥3,250/month is almost certainly unrepresentative of the regular wage in any second-tier city, as it has been driven down by the abysmal wage earned in rural areas.
Anyway, just something else to keep in mind when considering a job offer.