There's been a ton of overseas students studying in the UK for years. What has changed it that many Chinese families have suddenly become very rich since economic reforms (whatever happened to Communism) and with China's large population it has led to a sudden growth of mainland Chinese students in many countries around the world.
Hopefully they'll all have good experiences in their host countries, because one or two of them could end up being future world leaders
So be nice to them, or you could inadvertently start a future war or something
But seriously, after they finish study, most of them will go back home, join the family business, and help their parents to translate contracts, instruction leaflets and manuals into English