Is “Dai Zong, with armor horses tied to his legs, could perform the divine travel method, covering eight hundred li a day, to convey urgent military intelligence for Liangshan.” true?

Dai Zong's feat of traveling eight hundred li a day with the divine travel method carries a strong supernatural and mythical color. Although the name 'Messenger of Speed Dai Zong' already appears in the list of the Thirty-Six Heroes of Song Jiang in 'The Great Song Xuanhe Legacy', it is at best a nickname from the jianghu for his swift walking or quick wit. Official histories such as the 'History of Song' absolutely contain no absurd records of tying armor horses to one's legs to achieve divine travel. This plot is a magical exaggeration based on folklore in the novel.