It should not be a problem if going back China. There are always some people give up MBA(or other graduate programs) study and go back China. It is easy to find some explanation, so no need to worry...
I would suggest to use the rest of the time to visit around... Just like one of my good friends who gave up his EE Ph.D. study in a top school and went back China in 2002, he visited all the exciting places in US before he got on the airplane. Now he did extremely well in Shanghai, compared to many of his classmates still struggling in US. By the way, my friend's leave was totally due to his interest change -- no longer want to do research after his internship in summer... :-)