Which writers in the Northern Song Dynasty played a far-reaching role in the healthy development of prose creation?

Ou Su and others in the Northern Song Dynasty are the best successors of the ancient prose movement in Han and Liu Dynasties. Most of Liu Han's works follow the word order and become a model for later scholars to learn; However, they have not completely got rid of the habits of fu writers since the Han and Wei Dynasties, and some chapters are too pursuing the grandeur and refinement of words, even close to vulgarity. When Ouyang Xiu presided over the examination of the Ministry of Rites, he criticized the adventurous and bizarre style of writing in the literary world, while Wang Anshi and Su Shi even criticized the habit of "trying to exaggerate vulgarity" and "difficult brushwork". Most of their own works are clear-headed and approachable. This led to the healthy development of prose creation at that time, and its influence reached many ancient writers in Ming and Qing Dynasties.