前无古人

Explanation: Refers to people who previously never done. Also means unprecedented. 　　Usage: The main predicate; as the predicate attribute; with compliment 　　Source: Tang ang "Deng You Zhou Taiwan Song": "no man has gone before, to those who could be seen." 　　Examples: Both of these two phrases Xiong Jun, ~. (Song Mai "Yung Chai four pen" Volume II) 　　Riddle: Do; ancestor Thesaurus:  be never known before and never to occur again, unprecedented; have no precedent in history, never hear in past history, unheard-of Antonym Group:  continuously or incessantly, (as) thick as hail, Continuum continuous, Continuous Without a break, continue continuous