他倾城不曾倾她的心
[tā qīng chéng bù céng qīng tā de xīn]
It refers to the story where 'He is handsome enough to fascinate everyone in the city, but he can never win her heart'. It reflects that a person, no matter how admired he is by others, cannot obtain the heart of the one he loves. Highlighting themes like external appearance versus true emotions, unreciprocated love, etc.