I have stopped buying clothing in China long, long time ago. First the quality. The quality here is much much better here, even those from Walmart. We have a generous return policy. The return items usually go back to the manufactures so they have to pay attention to the quality. Second the style which is different. e.g. the collar of office shirts looks different. We have button down they don't. The sleeve length of T-shirt covers only half of upper arm in China. Here it covers almost to the elbow. Third price which is not cheap at all. The $20 Walmart pant is just 140 RMB. For similar price I doubt you can find one in China. Fourth time. I don't want to spend time shopping in a limited time trip. Fifth lagguage weight. I don't want to carry heavy lugguage. In addition most airlines have strickier lugguage policy now.
When i go back to China, i don't buy any clothing from there/including shoes except some Chinese style ones, like Tong Zhuang, it's not worthy it....you get much better deal geting stuff from USA...