满口脏话女汉子好过伪淑女
[măn kŏu zàng huà nǚ hàn zi hăo guò wĕi shū nǚ]
A tough and blunt girl is preferable to a fake lady. It conveys the idea that being genuine and authentic, even if outspoken or unconventional, is more valuable than pretending to be polite and proper.