The Chinese embassy requires an Original passport with blank visa pages and validity of more than 6 months, personally I think, the half-blank pages cannot be accepted. And they do not provide the same day service for visa appication, but 3- or 2-working-day process is available. BTW, about what you mentioned that the Indian nationals can only stay in China for less than 10 days on a tourist visa, it is not true, at least I never heard of it so far.