The poem "Supreme King, Yao and Shun, and then make the customs pure" expresses the poet's reverence for the ancients Yao and Shun. Yao Shun is a wise monarch in ancient legends of China. He ruled the country well and obeyed the destiny, so the people lived a happy life without contradictions and disputes, so he became a model revered by future generations. At that time, Lu You was in a period of constant war and bad customs. He paid tribute to Yao Shun and expressed his expectation and yearning for reform.
Let Custom Be Purified is another important poem in this poem. Among them, "custom" refers to social habits and moral fashion, which is equivalent to the current cultural and moral quality. Lu You expressed his bitterness and ignorance of the world of mortals here, which strengthened his patriotism. At that time, the social form was chaotic, but Lu You hoped to express the justice and warmth in his heart through poetry and pass it on to more people, thus fulfilling his patriotic ambition.