What does Tang Yin mean by the poem "Four Beautiful Topics"?

Based on the court life of Meng Chang, the Empress of the Five Dynasties of Western Shu, the work carefully depicts the gods and faces of four famous prostitutes dressed in costumes, and inscribed a poem: "Lotus crowns wear robes, and the day waits for the royal banquet, and the flowers and willows don't know that people have gone, and they strive for glory every year." Obviously, while exposing and satirizing the decadent life of Shu master, the painter also expressed deep sympathy for the unfortunate experience of palace prostitutes. This work fully demonstrates Tang Bohu's allegory of the strong and his sympathy and pity for the slaves in content and form.

Poetry and painting represent the same content. You can refer to the above to understand. I hope it helps you.