《隋书·列传·卷十》
杨勇自以为没有被废除的那些罪名，多次要求进见皇上，当面申诉冤曲。
时勇自以废非其罪，频请见上，面申冤屈。
Yang Yong thought he had not committed the crimes for which he was dethroned. He repeatedly asked to meet the emperor to appeal his wrongs face to face.