The slogan put forward by the police school in its creation is "express your own spirit and not stick to one pattern". This requires literature to fully express the author's personality and opposes the various rules and regulations of the retro school in literary expression methods. They believe that "what comes from the soul is true poetry", and good poems and articles are "willful" and "flow out from the chest one by one". This literary proposition played a positive role in "anti-antiquity" and "anti-Taoism" at that time. They advocate writing in an approachable literary language, without any allusions, and adopt a large number of proverbs, "Better be a modern man than a layman, and refuse to pick up words". In this respect, they think they have accepted the traditions of Yuan Zhen and Bai Juyi. Their efforts made great contributions to the liberation of the style of writing at that time, and the poems of the public security school were once popular and became the objects of imitation and learning.