What is the upper body of Tengu in metaphysics?

There is a cloud in Shan Hai Jing and Xi Shan Jing: "There is a beast on the Yinshan Mountain, which looks like a raccoon and has a white head. The name is Tiangou, and it sounds like durian, which can ward off evil spirits. " It is mentioned in the article that at first Tengu was an auspicious animal, which could resist fierce attacks, but later it evolved into a description of comets and meteors. The ancients regarded heaven as bad luck, so Tiangou also became the title of evil star. The "Tiangou" in the yellow calendar is indeed a sign of a catastrophe, and it is a catastrophe.