As the protector of Taoism, why did Yue Fei hold an axe?

Yue Fei is an outstanding star in the history of our country and a hero against gold. Yue Jiajun, which he formed, had a strong fighting capacity and made great contributions to the War of Resistance Against Gold. As the saying goes, "it is easy to shake the mountain, but difficult to shake the Yue family army". Yue Fei not only has a high command and combat ability, but also his own martial arts, which is based on official history. Yue Fei Biography in Song Dynasty recorded that Yue Fei was "born". What weapons Yue Fei used is also recorded in the official history. In the Song Dynasty, Yue Feichuan "lived for a few days, and then met the enemy. He flew alone with an iron gun and assassinated the Black Wind King, and the enemy was defeated." Yue Fei used Zhang Ba iron gun, which is the basis of Qian Cai's famous novel Yue Chuan in Qing Dynasty. It is said that Yue Fei used Zhang Ba pike, which was changed from a strange snake and named "Li Quan spear".

Whether it is official history or novels, Yue Fei is a gun, so the image of General Yue Fei holding a pike and riding a fine horse has been deeply rooted in people's hearts. But I found a strange phenomenon, that is, Yue Fei appeared as a Taoist marshal to protect the country with a big axe in his hand. Taoism has always said that there are four marshals to protect the law, but there are several different versions of who are the four marshals. One of the more influential sayings is that the four marshals refer to: Ma (Ma Lingguan), Yue Feihe. As a Taoist marshal, Yue Fei's image is consistent with history and novels. He also wears a helmet and a crown, with a white face and a black beard, but his weapon is not a gun, but a big axe. There are four portraits of Grand Marshal in Beijing Baiyun Temple and Fire Temple, among which Yue Fei holds a big axe. Some Taoist temples have statues of four marshals, and Yue Fei basically holds axes. Why not use the image of Yue Fei with a gun? No matter in official history or novels, there is no description of Yue Fei's use of an axe by the enemy. My understanding is that when Yue Fei appeared as a Taoist protector, he was holding an instrument, not a weapon. His axe should be a magic weapon, not an ordinary weapon.