The meaning of "there is nothing" means that there may be something, and it describes something that comes out of nothing.

Unnecessary means maybe there is, and maybe there is. This is the mainstream view, and "Etymology" holds this view. Perhaps there is an element of speculation, vagueness, and such an irresponsible attitude toward a marshal-level official.

In September of the 11th year of Shaoxing, Zhang Xian was arrested and imprisoned. In October, father and son Yue Fei and Yue Yun were also deceived and imprisoned. The veteran Han Shizhong, who had resigned and stayed at home, could not help but ask Qin Hui what Yue Fei's crime was.

Qin Hui replied vaguely: Although Fei Ziyun and Zhang Xianshu were unknown, the details of their affairs were unnecessary. Han Shizhong said angrily: "There are three words that are not necessary, how can we conquer the world?" In December of that year, Emperor Gaozong ordered Yue Fei to die.

Extended information:

In the eleventh year of Shaoxing, the Jin Kingdom was unable to conquer the Southern Song Dynasty and prepared to negotiate peace with the Song Dynasty again. Song Ting took the opportunity to suppress the generals with heavy troops, especially Yue Fei and Han Shizhong, who firmly advocated resistance to the Jin Dynasty.

Wanyan Wushu said in his letter to Qin Hui that Yue Fei must be killed, and then peace could be achieved. Qin Hui therefore accused Yue Fei of treason and had him imprisoned. Yue Fei, who was imprisoned, refused to admit anything when faced with this unfounded charge.

But at that time, Emperor Gaozong was induced by Qin Hui to believe that Yue Fei had committed treason and ignored Yue Fei's remarks. Even the ministers who wanted to intercede for him were rejected by Emperor Gaozong one by one. Execution, in the face of this, no one in the court dared to intercede for him.

Even though everyone knew in their hearts that Yue Fei was wronged, they did not dare to say anything due to pressure from Emperor Gaozong. I also know that this is just an excuse for Gaozong to get rid of Yue Fei.

But how could Yue Fei, who had been fighting for the Song Dynasty, admit to this imposed crime? Faced with this, the jailer who was in prison at the time said to Yue Fei that as a minister of the emperor, he could get The emperor's trust is the most important.

But the current situation is that Emperor Gaozong no longer trusts you. Regardless of whether you are rebelling now or not, facing this situation, you will definitely rebel if you escape. After hearing this, Yue Fei understood that as a threat to Gaozong, this was just an excuse for Gaozong to want his own death.

Baidu Encyclopedia—Unnecessary