【Interpretation】Jun: Ancient unit of weight, thirty pounds. The weight of a thousand jun hanging on a hair is a metaphor for the situation.
[Source] Han Bangu's "Book of Han and The Biography of The Emperor": "A husband with a wisp of responsibility is the weight of a thousand jun, the height of the hanging is infinite, and the abyss of the drooping is unpredictable, although he is very foolish, he still knows that he will never mourn him."
In 151 BC, the Han Jing Emperor Liu Qi ascended the throne. In the third year, Liu Tao, the king of Wu, dissatisfied with the central government's measures to reduce the fiefs of the princes, joined forces with the princes of Wu, Chu, Zhao, Jiaodong, Jiaoxi, Jinan, and Zizhou to rebel. This is the "Rebellion of the Eight Kings" in history.
At that time, Ren Langzhong, who was in the court of Liu Hao the King of Wu, opposed Liu Hao's rebellion, and was dissuaded, presenting the "Book of the King of Wu", which took a figurative approach to suggest that Liu Hao should not take risks. He said: "The situation is critical like a thin line hanging in the sky with a thousand heavy objects, and the place where it is sagging is a deep pool, which is very dangerous." At this critical juncture of life and death, if you can listen to the advice of advice, the country can turn the crisis into safety. ”
However, Liu Hao could not listen to it at all, and finally joined forces with the other princes to rebel. As expected, the "Rebellion of the Eight Kings" was quickly put down. His metaphor for King Wu's advice became the idiom of "a thousand shots of a thousand jun", which can also be used as "a thousand jun and one shot".