Chen Zhen 陳軫 was an advisor at the court of King Hui(wen) of Qin 秦惠文王 (r. 337-311), where he was a competitor to Zhang Yi 張儀. When Zhang was made counsellor-in-chief, Chen Zhen left to Chu 楚. He once was, as an ambassador of Qi, able to persuade general Zhao Yang 昭陽 of Chu not to further attack Qi. In the war between Han 韓 and Wei 魏, he stopped the king of Qin to support Han by comparing the king with a hunter regarding two tigers mauling themselves.