"Have you not seen that the water of the Yellow River comes from the sky?" Li Bai's poem echoes in my ears; "Time flies like an arrow, it never stops day or night." Confucius' words have new life in front of Hukou Waterfall; "The wind is roaring, the horses are neighing, the Yellow River is roaring." Guang Weiran's lyrics are the background music of Hukou Waterfall, which makes people feel excited.