雷同

Etymology
The Eastern Han Confucian scholar, in his annotations to the  (《》), derived the meaning as "to echo each other [] in the manner of thunder []", writing that "when a thunderclap strikes, all things resonate (with it) simultaneously" (「雷之發聲，物無不同時應者. 」). The original text so commented upon, referring to the proper etiquette when receiving a lecture from an elder, reads

Verb

 * 1) to be identical ; to mirror each other; to resemble
 * 2) to echo what others say; to parrot
 * 1) to echo what others say; to parrot