Monthly 4500 RMB with free accommodation arranged for oral english teacher of 18 hours /week in rural areas is a common practice.

Exactly so, and perfect for me given that nobody's putting me under much pressure at work while I can enjoy a higher standard of living than being a beleaguered and frustrated teacher back home. Foreigners who tell us that we rural foreign teachers are being paid a pittance insult our intelligence. And most of those guys have never been teachers back home! Yet they spout nonsense. If we were on the breadline here, our Chinese colleagues would be in dire straits, as they're on 1/2 our pay or less. As for touring, it's not my scene. A waste of money in my opinion.
And I think big cities suck, the people there are mainly unfriendly snobs. So terrible!