hi there am an african american with a tefl degree and currently holding a ghana passport cos i got a visa to china,i came to china with Lvisa and changed to Xvisa to study but now i want to change to Fvisa or Zvisa but its seems its pretty hard to fix here in china cos i have an african book which i don know why please can i go to hong kong and have it change to either F or Zvisa and please what is the requirements if have to go.i ve work for a while as an englishteacher but the school can't help me cos i hold a n african book.pls i desparately need your help cos i ve one and a half week more for visa to expire.thank you