Your writing skill are astounding. Did you teach the same to your students outside training centres in Chinese public education?
If so, they might need a polish-up in quality control of faculty management. Haha.
what ever else you stated, on your covering letter
My advice to getting-on-a-bit ft's, where appropriate is to lose them love-handles and wear a wig,because the students like cool young dudes.
So we can take it, that you were unsuccessful, in securing a teaching position in Nanning?, who'd of thought that, with your personality, prestige, sensitivity to other cultures and what ever else you stated, on your covering letter.
Oh well, let me give you some advice, stop wearing your KKK outfit on, when you apply for work in Asian countries, it helps. ha ha ha.