Philosophy: 1. Difficult and tortuous life and road can best temper people's will and character and increase people's knowledge and talents.

People who aim high will never be satisfied with the status quo and revel in the achievements they have made. They must continue to work hard and make up their minds to do a great thing before they can realize their wishes. This is enough to enlighten and inspire people: to abandon the sparrow's ambition and make great achievements. Appreciation: The first sentence of this poem is the origin of the waterfall. In the depths of the mountains, there are countless unknown trickles that gradually converge into huge mountain springs. After experiencing the obstacles of "thousands of rocks and valleys", it finally reached the cliff and "plummeted" to form a spectacular waterfall. This sentence captures the tortuous process of waterfall formation and endows inanimate objects with vivid characters. The word "spare no effort" is full of personification and praise, which can be read by a famous saying in Mencius: "Heaven will do great things for the people of Sri Lanka, and it must first suffer from its mind, work hard for its bones and muscles, starve its body and empty its body, so it can endure and get what it can't." Difficulties can temper great personality. This sentence seems to imply such a philosophy.

Looking at the giant waterfall, cliff fossils, beads hanging upside down, people have the feeling that "water flies down three thousands of feet, and it is suspected that the Milky Way has fallen for nine days", but they can't get a glimpse of its "source". Only when you look from a distance and "look at the hanging waterfall in Qianchuan" do you know that it comes from the misty peak. The second sentence focuses on the lofty weather of the waterfall, which embodies people's lofty aspirations and has the meaning of discerning heroes. "The source is high" is far beyond the reach of the potential, which implies that "the sea will eventually".

Writing about waterfalls has experienced extraordinary experiences and high morals, portraying the most prominent characteristics of its personality, and at the same time, it is full of lofty sentiments, which fully builds momentum for the latter two sentences. The third sentence suddenly talks about "streams", taking care of the "thousands of rocks and valleys" in the first sentence, which is a small swing in poetry. When the mountain spring runs in the ravine, there will be many obstacles, which seems to persuade it to stay. "Why rush down the mountain and add waves to the world" (Bai Juyi's Bai Yunchun). However, the happiness of a stream can't satisfy it. It keeps opening its future to the sea with its heart. Only in this way can it become a waterfall in front of the cliff and finally return to the eastern sea. Because of the circuitous third sentence, the last sentence is more powerful. "Can" and "eventually" echo back and forth, showing the confidence and determination to forge ahead. The word "making waves" is extremely vivid, which makes people see the vast white waves like mountains. From the words "stay" and "return", we can realize that the last two sentences are still personalized, which reminds people of the small ambition of abandoning sparrows and the lofty sentiments of Mu Honghu. The role of the waterfall is thus completed.