Wall rafters
Chinese idiom, Pinyin is g é B ì Cu ā NCHU á n, which means something that can't be done and beyond one's ability. It comes from Yonghe Yuefu, Dianjiang lips, prostitute's resentment.
The origin of Idioms
"Yongyu Yuefu · dianjianglip · prostitute's resentment": "I didn't think about the rafters on the other side of the wall, it's not a lot."
Idiom usage
Used as an object or attribute; used in dealing with affairs.
Wall rafters
face others with frowning brows and angry eyes - héng méi nù mù
Simple words and abundant meanings - yán jiǎn yì fēng