Earlier quoted context omitted.
Many things are banned in China, especially web services, in order to create an internal (was possibly exportable incubation, but not since 'progression' over the past 5 years after the government - hegemony of leaders and follows on, rather than government workers, themselves the mules). But translate.google.cn is not banned on the mainland and Google services work very finely in Hong Kong. And forcing Mandarin does…
It’s not about forcing Mandarin being bad, it’s about prohibiting non-Mandarin being bad. US equivalent to this would be forcing English (which we do) while jailing anyone who teaches Creole (which we don’t).
Mandarin being the primary language of education doesn't mean that Cantonese is prohibited; it's just not mandatory, so most native Cantonese speakers aren't going to get a formal education in it unless they specifically seek it out.