oblivious

"Chinese" can mean the written OR the spoken language. It can also be used to describe people who are born of this descent.
& H1 U  N2 u& Q2 g
) s3 q2 R$ q7 ^1 |" M1 c4 ]tvb now,tvbnow,bttvbi.e. Can you read Chinese? <-- writtentvb now,tvbnow,bttvb9 D$ i+ `/ h4 v7 k, C
Do you speak Chinese? <-- spoken公仔箱論壇; W: n. R% B$ T$ R8 v
Are you Chinese? <-- adjective公仔箱論壇* ?* r) `8 {# K& L" ?+ W3 L# q8 x

5 [7 T+ P0 [9 u5.39.217.77Since this series takes place in an era of HK before the late 1990s (before it is officially returned as a part of China), "Chinese" can be loosely used to mean Cantonese, since Mandarin hasn't been established as a common dialect of China yet. On the other hand, Cantonese is the predominant language of the local area. So, I think what 松哥 said is acceptable.