According to legend, Hongming Dao was cast by the Yellow Emperor in ancient times and made of the same material as Xuanyuan Sword. At that time, after the production of Xuanyuanjian was completed, some raw materials were left behind, and the Yellow Emperor used these raw materials to build Hongming Dao. However, as soon as Hongming Dao was made, it became spiritual, and finally it became a bird and flew away by itself. It is said that Qin Ershi Hu Hai got this Hongming knife. However, there is a rumor about this knife. Whoever gets this knife will lose the world, so Qin Ershi and Hu Hai get this knife and lose Qin.
There are other sayings about Hong Mingdao. This knife did appear in history. During the period of Emperor Wu of the Han Dynasty, Emperor Wu gave this Hongming Dao to Dong Fangshuo, hoping that Dong Fangshuo would take good care of it. Besides Hongming Dao, Master's Qinglong Crescent Moon Blade is also a very powerful knife. There is also a legendary story about this knife. It is said that this knife is so heavy that ordinary people can't control it at all, and Guan Yu is a man born with divine power. This knife can be manipulated freely in his hands, but when Guan Yu died, there was no trace of it.
Also, Zhang Fei's sword is made of fine red iron, and it is also a very famous sword. It is said that this knife is very sharp. Zhang Fei was invincible on the battlefield with this knife and cut off many enemy heads. But in the end, Zhang Fei died by his own sword. It is said that his subordinates cut off his head with their own knives while he was sleeping.