To be honest, I don’t know what u mean that u r the 1st in China, but I’m sure that to be a primary school teacher u need no deep understanding of English - that’s a linguist’s qualification. It’s like using a cannon to shoot sparrows.
To be a teacher, u need far more than language skills. Have u ever prepared for this job? Have u ever got a teacher certification? Do u know what an English teacher means? Do u have any understanding about how to be a good English teacher?
It’s not true that u know English very well then u can get any job u want which is related to English. Just like Li Bai knows Chinese VERY VERY WELL but, as we all know, it doesn’t mean him can be a good government official.
It’s no need to murmur about losing a primary school teacher job if u r qualified for much better ones. I think there r many good jobs all over the world for u - a job applicant who is Chinese no.1.
BTW, I didn’t fully understand what u said, it’s too difficult for a normal tianyaer. Could u pls say English? Then may be I can give some advices abt yr career.