《旧唐书·列传·卷一百一十》
没当几天御史，就被撵到南方边远之地。三度任国子博士，是个闲职不能有所作为。
暂为御史，遂窜南夷；三为博士，冗不见治。
He was not a御史 for long before he was driven to the remote south. He served as a Doctor of Imperial College three times, which was an idle position and could not achieve anything.