Known as the "Ghost Maruko National Outline", it is a famous sword treasured by the Japanese royal family, and one of the so-called "Five Swords in the World (Tai Guang Shi, Three Sunmoons, Zuo Jin, Zhuzhu Maruko Hengji, Tong Zi Che An Outline and Ghost Maruko National Outline)" is now in the Japanese Palace.
according to Taiping Ji, the first generation of the Kamakura shogunate was often tortured by the imps who appeared in dreams. Although the Yin and Yang teachers were invited to do things, it didn't work. One night, an old man appeared in his dream, claiming to be "Taidao Guogang", and said, "I can't pull it out of the rusty sheath because I was held by a dirty hand. If Master Kita wants to punish the monster early, please wipe off the rust on me quickly." Kitajima got the message and wiped out the Taidao, which is called the national program. At that time, there was a brazier's foot made of silver in the political room, and the knife standing beside it suddenly fell to the brazier and cut off the head of the ghost-shaped platform foot. From then on, the kids who harassed the current politics no longer appeared. It is said that because of this incident, Kitajima's current politics named this knife "Ghost Pill".