I have no experience of teaching in China although I'm sure one of our teachers based there will be able to give you some useful information. However, I can safely say that in this day and age, trying to get a decent job anywhere without a TEFL/TESOL/CELTA qualification will be very difficult. You need to bear in mind that in order to get a place on most courses for those qualifications, your English needs to be near-native. Have a look at my corrections to your post above, in red. You might need to work on your own English a little more before you're ready for a qualification as an English teacher.
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