Advice needed for jobs in Northern China

Hi there

I am due to finish my first term in January as an intern teacher. I am teaching English down in Donguan which is in the south of China. And would like the different experience that teaching up in the north could give me. Can anyone give me any advice about any possible teaching positions in or near Tibet/Inner mongolia or where to look. recommended schools. areas or agencies. I am a 43 year old male. Many thanks in advance.

Martin