The dragon crescent moon blade in Romance was made by Guan Yu during Liu Bei's uprising. Qinglong crescent moon blade, also known as leng Yan saw, weighs 82 Jin. After each battle with Guan Yu, it was "dancing 82 pounds of dragon crescent moon blade" and "hanging dragon sword upside down" and so on. After Guan Yu was killed, the knife fell into the hands of Pan Zhang, a general of the State of Wu. Later, Guan Xing beheaded Pan Zhang and took back his father's knife, which can be described as "returning to Guan after finishing the knife". Look at those who say that Guan Yu's weapon is not a dragon crescent moon blade, but it is nothing more than speculation based on the records in the History of the Three Kingdoms. The Biography of Guan Yu does not record what weapon Guan Yunchang used, only that when he beheaded Yan Liang, he wrote: "Riding a horse and stabbing people." . Some people arbitrarily decided that Guan Yu used a spear instead of a knife according to the word "thorn". This basis is by no means enough to refute! From the font, the word "stab"-"side vertical knife" is the shape of the side, that is, the word "knife" can be seen that this action is indeed related to the knife. In terms of meaning, there are six interpretations of tattoos in modern Chinese: 1 Pierce or kill with something sharp. 2. Go for reconnaissance. 4. Criticize and laugh at other people's shortcomings and mistakes with sharp language. 5. Something as sharp as a needle. 6. A business card. It must be said that Guan Yu used a gun and a spear, mainly according to the first meaning. The word "thorn" has the meaning of killing in ancient Chinese. As far as modern Chinese is concerned, there is also the word "thorn". It can't be said that "stabbing" means "penetrating or killing something sharp" to kill the target. There are examples to prove that, as recorded in Zuo Zhuan, "stab the child to suppress" and "stab" means "kill". So we can't blindly think that Guan Yu used guns and spears. The ancient book "Records of Ancient and Modern Knives, Lights and Shadows" wrote: "Guan Yu was highly valued by his former owner, and he did not hesitate to take Dushan Iron as his sword, which was called' ten thousand enemies'. And lost, cherish the knife and throw it into the water. " Moreover, during the Three Kingdoms period, there were indeed long-handled broadswords for war, which were available at the end of the Eastern Han Dynasty. For example, the Biography of the Three Kingdoms Dian Wei records: "Hao Wei held a big double halberd and a long knife, and the army said:" Dian Wei is a strong man under his account, carrying a pair of 80 Jin halberds. "It can be seen that Guan Yu used a knife, and it is also credible to use a 82-pound long-handled broadsword. The origin of the name of Qinglong Crescent Moon Knife should be said to be the decoration and rendering in the novel. It is impossible to say that Guan Yu's sword in history is indeed engraved with dragon patterns, which is no longer elegant. Mainly use this majestic broadsword to highlight Guan Yu's heroic spirit. A broadsword similar to the Dragon Crescent Moon Knife was later called "Wang Guan Knife" or "Guan Knife". Crescent knife is really a kind of knife. According to the biography of armament, "long knife, short knife, hook sickle and crescent knife. The latter exercise shows its superiority, but it cannot be applied to arrays. "The reason is that this kind of knife is quite heavy and not suitable for actual combat. It can be seen that Guan Yu really has great brawn and is called "the enemy of ten thousand people" and "the tiger of the world". And later generations also made more of this Dao. For example, there is a rusty crescent knife in Huimin Street Mosque in Xi 'an, Shaanxi Province, which is made of pure iron and weighs 100 kilograms.