Sing a sad song
It's a Chinese idiom. Pinyin is y ǐ NH á NGB ē Ig ē, which means to sing aloud. From Bing Xin's praise of cherry blossom.
The idiom comes from Bing Xin's praise of cherry blossoms: "the cemetery is full of gloomy grave sweepers, sometimes drunk people who drink too much wine and sing sad songs."
Sing a sad song
develop one 's moral being and lead a virtuous life - zǎo shēn yù dé
alternate leniency with severity - kuān měng xiāng jì
serve an emperor and do service for a throne - pān lóng fù jì
all sufferings have their reward - kǔ jìn gān lái