The reason for asking CIS is that I believe CIS has both English and Chinese (Mandarin) subjects, so that my son can learn both languages in order to speak, write and read English, Mandarin and Cantonese, which I believe will be a very good advantage for his future. Another point is that I also wish to know the general comment of CIS such as whether the teachers are helpful and facilities are good, any discrimination to local Chinese studying there (meaning, non-English speaking family), etc.