Archway introduction: The archway at the entrance is the main entrance of the Yellow River Tower. The main plaque on the front is engraved with the four characters "The Great Yellow River"; the main plaque on the back is engraved with the four characters "The Beautiful Yellow River". Its meaning is: the great Yellow River, continuous self-improvement, and virtue; the beautiful Yellow River, the peace of the country and the people, the river is clear and the sea is clear, expressing the beautiful wish of the Chinese people to be grateful to the mother river and build the Yellow River Tower.