Mournful thoughts
As a Chinese idiom, Pinyin is ā is ī R ú ch á o, which means a flood of sad thoughts and describes extreme grief. From "battle on the plains.".
The origin of Idioms
Beijing Opera "battle on the plain" Scene 5: "Zhao Yonggang (singing) laments like a hot tide of tears, Pingchuan has boundless enemies."
Idiom usage
Subject predicate type; as predicate, object; describe extreme grief. example her husband's misfortune made her sad.
Mournful thoughts
as difficult as to climb up to the sky - nán rú dēng tiān