对不起我的心已欠费
[duì bù qĭ wŏ de xīn yĭ qiàn fèi]
Using the metaphorical language often seen in digital communication (e.g., cellphone service charge) to express one’s emotional exhaustion. Translated as 'Sorry, my heart doesn't have enough credit', conveying feelings such as apathy or lack of emotion remaining towards something.