I studied Wal-mart for more than 10 years. Admire the no-frill culture of this company ever day.
Actually the richest families in America and Europe all share the same culture.
The abundance of American living is partially attributable to Wal-mart.
When one comes back to China, he or she has to dress up well because Chinese often judge people based on dress. You do not have to do so back in States since different settings have different dress codes. Business casual or jean casual work well in most cases.