Soft sword. This can reflect the bravery and heroism of breaking through mountains and rivers. Tanshanhe is about Xiang Yu. The lyrics of "Treading Mountains and Rivers" mean the heroic spirit that can't be concealed by the majestic melody, the spectacular Ma Benteng, the long guns piercing the sky decisively, the yellow sand rolling in Wan Li, and the smoke mixed with the blood of soldiers, which is heavy and vicious.