What is the main content of Huang's poem?

The poet William. J alone will praise our great motherland and the national spirit of the Chinese people, inspire their national pride and self-confidence, and defend the Yellow River, our mother river and China! This poem by Huang embodies the poet's great patriotism.

Author's brief introduction: Guang William. J, male, (19 13—2002), formerly known as Zhang Guangnian, has experienced a wandering, passionate and youthful youth in his 89-year life. He kept a diary all his life, and was enlightened very early. He took every opportunity to learn foreign languages and China classical literature.