What is your point? If we want to use a single language for simplicity, English is the best option, when targeting a more diverse audience than just China. For everything else we need multi-lingual apps, which either segregate their userbase by language or use translation software (Which many international services already use, e.g. Facebook)
So are you arguing that it would be better if Chinese was the lingua franca of the internet instead of English? Or are you proposing some other solution?