人走茶凉多年久不归独倚高楼望月盼归人
[rén zŏu chá liáng duō nián jiŭ bù guī dú yĭ gāo lóu wàng yuè pàn guī rén]
'When people are gone, even tea gets cold' suggests the loneliness and melancholy of long waiting and longing for a reunion after being separated from dear ones, as one leans alone on a high building watching the moon and waiting anxiously for the return of someone.