Lowspirited, from what my friend told me, as he is HKG based, it varies on the process it could take weeks even months, in his case it took months (2 months). The process, as far as he can remember, there was just the 1 interview. As for the language, yes there was a small test. They give you a card and you just have to read it (Chinese and English) also they talk to you for a little bit in English, Cantonese and Mandarin.