内裤再破也性感感情再深也扯淡
[nèi kù zài pò yĕ xìng găn găn qíng zài shēn yĕ chĕ dàn]
The phrase humorously contrasts superficial attractiveness with deeper emotions: even tattered underwear can be sexy, but deep feelings are futile or absurd ('panties can be sexy no matter how worn out; deep love means nothing in the end'). It satirizes modern relationship attitudes where materialistic views might overpower emotional bonds.