I'm so sad
It is a Chinese idiom, and its pinyin is Chu ò D á sh ā ngcu ì, which means to describe very sad and sad. It comes from the biography of Liang Hong in the book of the later Han Dynasty.
The origin of Idioms
In the biography of Liang Hong in the book of the later Han Dynasty, it is said that "the heart is depressed, the heart is depressed, and the ambition is weak."
Idiom usage
As a predicate or attributive; of sadness
I'm so sad
difficult miscellaneous diseases - yí nán zá zhèng
one 's feeling is deep as the ocean - qíng shēn sì hǎi