【入情入理】〖rù qíng rù l〗[be fair and reasonable; conform to the course of nature; justifiable; perfectly logical and reasonable]

入圣超凡尖端攻，

情窦顿开俊贤钟。

入境问禁要切记，

理所当然学孝敬。

合乎常情和道理。In line with common sense and truth.同：天公地道、天经地义。反：不近人情。歇：丈母娘疼女婿。谜：儿女孝敬老人。