To betray one's collective interests or principles for personal gain or advancement.
在关键时刻，他为了得到上级的青睐，不惜出卖团队的努力成果，这种行为简直是卖国求荣。
At a crucial moment, he, in order to gain favor from his superiors, did not hesitate to betray the team's hard-earned achievements; such an act is truly selling out for personal gain.
Era:
Ancient
Frequency:
Story:
King Ling of Chu was preparing to invade the state of Cai.
An envoy from the state of Chen reported that Chen's former ruler had died, and Prince Liu had ascended the throne.
Gongzi Sheng, the third son of Marquis Chen, and Gongsun Wu, the son of Crown Prince Yanshi, came to report that Gongzi Guo and Situ Zhao had conspired to murder Crown Prince Yanshi and install Prince Liu.
King Ling of Chu immediately dispatched troops to punish Gongzi Guo.
Situ Zhao then killed Gongzi Guo and offered the state of Chen as a tribute to King Ling, seeking personal gain.
As a result, Situ Zhao was exiled to the Eastern Sea.
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