《旧唐书·列传·卷五十六》
国忠从侍御史直到宰相，大约掌管四十多种职，又兼任度支、吏部三司的官吏选拔，由于事务繁重，只签一个字，还不能完成，都责成胥吏去完成，贿赂公开进行。
国忠自侍御史以至宰相，凡领四十馀使，又专判度支、吏部三铨，事务鞅掌，但署一字，犹不能尽，皆责成胥吏，贿赂公行。
Guo Zhong has been from the Imperial Censor right up to the Prime Minister, approximately in charge of more than forty positions, and also served concurrently as an official selector in the Finance Ministry and the Ministry of Personnel’s three offices, given the busy事务, he only signed a single character, and couldn’t even complete it, and blamed the corrupt minor official to complete it, the bribery was open.