唐朝后期,南北司(北衙宦官与南司翰林)的权力斗争十分尖锐,可说是贯穿始终的主要矛盾之一。在这样的政治背景下,作为朝官老大的宰相如果依附宦官当然会遭士人白眼不得人心,认为是叛徒;但反过来,如果南司士子没有掌握实权的权宦的推荐,又根本不可能当上位极人臣的宰相。南北司本身都是唐朝政府的重要组成部分,却分裂成两大政治势力和流派,这本身就是一种弊政。而贵为国家元首的皇帝若不能协调此种矛盾,就也只能隔岸观火让他们斗个死去活来 In the late Tang Dynasty, the power struggles of the North and South divisions (Beiya eunuch and Nanxianhanlin) were extremely sharp and could be said to be one of the major contradictions that ran throughout. Under such a political background, the prime minister who is a leader of the military may, of course, be blindsided by his scholars and regarded as a traitor. However, if the Nanshi Shih did not have the recommendation of a powerful official and did not, at all, May be the prime minister of the prime minister. Both the North and South divisions themselves are an important part of the Tang government and split into two major political forces and schools, which in itself is a derogatory policy. If the emperor who is expensive for the head of state can not coordinate such contradictions, he can only watch the fire on the other side of the river to make them die