老生常谈lǎoshēngchángtánTop 40000Meanings1. an old observation (idiom)2. a truism3. banal commentsCharacters used老old生birth常common谈to talkExamples1今天jīntiān的de激进jījìn也许yěxǔ是shì明天míngtiān的de老生常谈lǎoshēngchángtán。What's radical today may be cliché tomorrow.