求翻译：这一类人中，大概好东西极少，否则包公和海瑞等绝不会流芳千古，久垂宇宙了。可这些人到了皇帝跟前，只是一个奴才。是什么意思？

People in this category, probably very few good things, otherwise will never liufangqiangu such as Bao Zheng and Hai Rui, vertical universe for a long time. Can these people up to the emperor was only a slave.