chop one 's vitality day by day -- have sexual intercourse every night
Dandanershan, a Chinese idiom, Pinyin is d à nd à n é RF á, which means daily damage or funeral. It's from Mencius, gaozishang.
Idiom usage
To refer to damage
The origin of Idioms
"Mencius · gaozishang": "it's just as good as the axe to the forest, and it's better to fight against the forest, can it be beautiful?"
chop one 's vitality day by day -- have sexual intercourse every night
an exalted discussion and extensive statement - chóng lùn hóng yì
throughout the empire all hearts turned to him - tiān xià guī xīn