比花还妖艳的笑容
[bĭ huā hái yāo yàn de xiào róng]
Means 'A seductive/suggestive/bewitching/charming/blooming smile prettier or sweeter than flowers'. This is a very vivid phrase depicting the attractiveness of the subject's smile, suggesting it possesses a captivating allure that exceeds natural beauty found in flower blossoms, likely leaving a strong impression on people meeting or thinking of this person.