白天不懂夜的黑咖啡不解酒的愁
[bái tiān bù dŏng yè de hēi kā fēi bù jiĕ jiŭ de chóu]
'Daytime Doesn't Understand The Darkness of Night Coffee Doesn't Solve Alcohol-induced Sorrow'. This phrase reflects different moods between daytime and nighttime. Coffee often associated with alertness, doesn't seem to be enough to cure the sorrow after drinking. It can refer to unspoken struggles within one's life or internal conflict.