Introduction to the First Gorge of the Huaihe River: The First Gorge of the Huaihe River flows eastward, and when it encounters the obstruction of Bagong Mountain, it turns back and flows backwards, splitting the stone in half, and seizes the way down. This is the First Gorge of the Huaihe River - —Kip Pass. It was called Xia Shikou in ancient times. It was a gorge dug by Dayu when he was controlling floods. It is also the "Huaishangjin Fortress", a dangerous place for garrisoning troops in ancient times, and is one of the ancient battlefields of the Battle of Feishui.