Nie Gai, surnamed Zhi, is a descendant of Jin nobles. He was a swordsman at the end of the Warring States Period. It only happened once in Historical Records, Volume 86, Biography of Assassins. Jing Ke passed through Yuci and talked with Nie Gai about fencing, but they broke up in discord.

Historical Records Volume 86 Biography of Assassins Chapter 26: Jing Ke wanted to swim across Yuci, and he discussed his sword with Nie Gai, but Nie Gai was angry. Jing Ke, named Jing Qing after person or word. Nie Gai said: "If I have a problem with this sword, I will look at it;" Go if you try, and dare not stay. " Jing Qing, the former owner, has driven to Yuci. The messenger returned, and Nie Gai said, "If you go, I will see it!"

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Jing Ke traveled all over Yuci and talked with Nie Gai about fencing. Nie Gai got angry and stared at Jing Ke. Jing Ke left. Someone suggested calling Jing Ke back again. Nie Gai said, "I just told him about fencing, but there are some differences. I fixed my eyes on him. You might as well try to find him. I think he should leave here in this case and dare not stay. " I sent someone to the host of boarding in Jing Ke and found that Jing Ke had left Yuci by car. When the messenger came back to report, Nie Gai said, "Of course he wants to leave. I just stared at him and scared him! "