I have lived in China for the last ten years, working in the tour industry. I have been fortunate enough to travel widely in China and in many of its neighbours
The museum is closed. China House is weird but fun about 8 years ago
Pronunciation is the key. You need some form of audio lesson about 8 years ago
And how it should be used? My friends arriving Shenzhen aiport almost at midnight and need to get to HK pronto.
There is one 24-hr border crossing between Shenzhen and Hong Kong. It is called Huang Gang (皇崗) on the Shenzhen side or Lok Ma Chau (落馬洲) in Hong Kong. Your friends should try to pre-book a limousine service transfer. about 8 years ago