after 3 years in archi, you get bachelor of arts (architecture);
after 4 years, you get bachelor of arts with honours;
after 5 years, you get master of architecture.
after working for another 2 years, you can sit for architect registration exam by Singapore Institute of Architect (SIA), and you become an registered ARCHITECT.
and so, basically, you can practice anywhere in the world, including China.

as far as i know, there is no transfer-in student, or sit-in student in archi...

by the way, if you want to do archi, why not give up the scholarship?

my goodness, you mean you want to do archi after u graduate? i dont know about the admission for this kind of case, but mostly seems not possible.
for admission into archi, there is a entrance exam and an interview, on top of the basic requirments for normal courses.
without scholarship, you can apply for study loan, just in this case, you have to pay back....