The opposite records in the unofficial history of the Tang Dynasty appeared later than that.

Literators and officials felt anxious about the situation even intensely unsatisfied to the "The Previous Historical Book about Tang Dynasty",a tide researching on the history of Tang Dynasty had emerged during the middle-age of North Song Dynasty,and therefore,a lot of important historians and historical books had emerged in larged numbers.

In Chinese traditional history, the authorized history and the unofficial history are the indispensable two types of material at the process to research the history, which establish the mansion of historiography.

History of Three Kingdoms is focused on the outstanding capabilities of Cao Cao,while the unofficial history in Eastern and Western Jin Dynasties and South Dynasty gives the indisputable depiction of Cao\'s shortcomings which presents Cao even as a wantonly treacherous self-interest villain.

The literary view of the early Tang historians, represented by Linghu Defen and Wei Zheng, appears compromise and reconciliation, but in essence manifests their complete comprehension of the law of literary development and correctly points out direction of development for the brilliant Tang literature.