This is a famous poem by Zhang Wentao, a poet of the Qing Dynasty. The original text is: "How easy it is to dare to talk about common proverbs. Pure refinement begins with nature."
The main idea is that the poet dares to talk about it. It is not easy to compose poetry in ordinary language, and it is even more difficult to write excellent poetry. Only through hard work and hard work can one write a natural work of art.