Which school of poetry is Zhang Ruoxi?

Zhang is from the early Tang Dynasty. He, Zhang Xu and Bao Rong belong to the pastoral school, and they are called "Four Scholars in Wuzhong". Among them, A Moonlit Night on the Spring River is a well-known masterpiece, which follows the ancient theme of Sui Chen Yuefu and expresses sincere and moving feelings of parting and philosophical life perception. The language is fresh and beautiful, and the rhythm is melodious, which washes away the thick powder of palace poems and gives people a feeling of clearness, emptiness and beauty.