貌似女汉子都有颗玻璃心
[mào sì nǚ hàn zi dōu yŏu kē bō lí xīn]
It refers to 'girls who act tough (like guys) usually have a sensitive, fragile heart'. It's highlighting a perceived contradiction between outward strength and inward delicacy - portraying strong women who hide vulnerability within their exterior toughness.