The only reasoning I could see for this is a swipe at native english speakers from the UK, perhaps they are pissed off at David Cameron meeting the Dalai Lama one too many times?

Unless there is a mistake somewhere, and they will accept a 3 year UK degree in lieu of a 4 year one in other countries? If this law is followed to the latter, then how could UK graduates teach in China...seems a bit nonsensical to me, but I am sure it should still be ok for UK teachers.