老生常谈 [- - chánɡ tán]a commonplace talk of an old scholar; a standing dish; be a mere platitude; cut and dried [dry]; home truth; (This) is mere senile gossip.; platitudes; stale news; Sunday-school truth; trite remarks; truism:
•¶老生常谈的演讲 cut-and-dried speech
•¶ 这番话无非是老生常谈。 The talk is no more than a platitude.