What's the name of Yang Guo's sword in The Condor Heroes?

In the previous duel with GongSunZhi in the Valley of Despair, I used the "Gentleman's Sword" hidden in the back of the calligraphy and painting room of the Valley of Despair, which was a pair with the "Lady's Sword" of Little Dragon Girl. After the little dragon girl misunderstood Yang Guo, she gave the "female fairy sword" to Guo Fu. After Yang Guo was cut off by Guo Fu, two swords landed in Xiangyang City and never appeared again. After that, Yang Guo was saved by the carving god, and with the help of the carving god, he got the dark iron epee that the swordsmen sought to defeat alone. He then used this sword until he retired with the little dragon girl, and then gave the dark iron epee to Guo Xiang.

"Gentleman's Sword" and "Lady's Sword"-the blade of the sword is black, without any luster, just like a piece of black wood. The two swords have neither sharp nor sharp edges. Their heads are dull, but they are somewhat like thin wooden whips, but they are chilly and extremely sharp. The size of the two swords is the same, and the materials of the two swords are the same, both of which are extremely magnetic. If you put them closer, the two swords will automatically attract each other. "The gentleman's sword was obtained by Yang Guo, and the lady's sword was obtained by Little Dragon Girl.

Dark iron sword-"The epee has no front, and it is skillful." Demonbane fought for defeat alone, relying on it to run the world before he was 40 years old. The body of this sword is more than three feet long, and the tips on both sides are blunt. The tip of the sword is round as a hemisphere, and the body is dark but glowing with a faint red light. Made of black iron, weighing 8864 Jin. Dark iron is the most precious thing in the world, even if it is difficult to get one or two. As long as you add half a dollar to the ordinary sword and halberd, all the iron becomes sharp weapons, while the dark iron sword is made of pure dark iron, which is naturally a treasure knife in Wulin. Although there is no blade, it can break a heavy armor weapon. Later, Guo Rong and his wife found out that this Dragon Slaughter Road was made by pyrotechnics after the exchange of refined gold from the Western Regions, and it contained "Eighteen Palm Dragons" and "Wu Mu's suicide note".