姐男人不怕诱惑哥女人不怕寂寞
[jiĕ nán rén bù pà yòu huò gē nǚ rén bù pà jì mò]
It means 'Sister, men are fearless of temptation; brother, women are unafraid of loneliness.' This phrase implies a tough and determined character, indifferent to outer lures or loneliness.