It depends on which pool you belong to. For example, if you are in engineering/science applicants pool, it is much harder(too many applicants, many have higher scores/GPAs, and B-school does not like such applicants -- compared to applicants with business background). But if you are in a pool which can make the students pool look more diversified, i.e., a non-traditional applicant background, your chance is much bigger. Thus, even you are from the difficult major like engineering/science, try to jump to more business related position, which will help you in application.
Study a master first in USA is not a good idea. In USA, after master, most people have to get a job, which may not be the one you desire, you may have to keep legal status and also try green card, which will take several years. Plus, in US, most Chinese have to work in jobs more related to technology and have very slim opportunity to expose to management( which is very easy in China though), so you are in big disadvantage in application.
Good Luck! | 
