外表淑女内心女汉子
[wài biăo shū nǚ nèi xīn nǚ hàn zi]
In literal translation: Outward appearance appears gentle like a proper woman, while actually she owns strong mentality just like tomboy girls.'Outer Lady, Inner Tomboy' means someone outwardly presents a refined demeanor or feminine characteristics (politeness, elegance) but inside she may have bold personality or unconventional behaviors like a boy. The juxtaposition here expresses dual facets of personality - both delicate and rugged.