I don't know tbh, but the answer is yes. Gunpowder was used both in limited siege roles and in a sort of proto-shot and sword roles in the form of the firelance. The Yuan Dynasty was also the first to have handcannons iirc.well, why would that be the case? did the mongols and kublai khan actually expand/rule BECAUSE of gunpowder? if so, how did i miss that in my research?