On source of essayists' literature thought in late Tang Dynasty

Essayists elucidated their thoughts in a lot of creations definitely in late Tang Dynasty,which derived from Han Yu and Liu Zongyuan who were representative figures of ancien-stale prose movement in middle Tang Dynasty.These essayists in late Tang Dynasty developed theorises such as expressing Dao by literature and injustice proveks outcrys that Han Yu and Liu Zongyuan advocating further basing on inheritance.These theories enriched and afflunced the theoretical connotation of ancient-stale prose movement in middle Tang Dynasty,and had an important effect on later generation,especially on ancient-stale prose movement in Northern Song Dynasty,and won an important position in history of thinking.