It's not "Mount Tai is the top of the mountain, its face doesn't change color", but "Mount Tai collapses in front, its color doesn't change color", and the next sentence "Mount Tai collapses in front, its color doesn't change color" is "Elk prospers on the left, its eyes don't change". "Mount Tai collapses in front and its color remains the same" comes from Su Xun's "Quan Shuxin Book", which means that Mount Tai collapses in front of his eyes and his face remains the same. Elk suddenly appears beside him without blinking, indicating that he is calm and not affected by the outside world.