Empire has always been the honorific title of Empress Wu Zetian, and Empress himself was born in an official family and experienced ups and downs in his life. He made great contributions to Wu Zhou at that time and made great efforts to continue the Tang Dynasty after Wu Zetian.
Di Renjie is a truly talented person. From the time he became an official to the end of his life, all the cases he handled were enforced impartially. It is false to say that the prince is guilty of the same crime as the common people, but at least he is fair to some extent.
Di Renjie is an honest man. During Wu Zetian's reign, he repeatedly advised Wu Zetian to be imprisoned by cruel officials and dared to prove his innocence to Wu Zetian. Even if you are an official, you dare to give advice to Wu Zetian.
During the Wu and Zhou Dynasties, the forces of Li Tang and Wu Jia fought cruelly for the rights of Wu Zetian after her death. Wu Zetian was able to make Li Xian a prince and determined to return to Li Tang, in which Di Renjie played a great role and contributed to the continuation of the Tang Dynasty.
During his tenure as prime minister, Di Guo put down many wars for Wu Zetian and made outstanding contributions to maintaining the rule of Wu Zhou. Wu Zetian relied on him so much that after the death of the old empire, Wu Zetian said, "The imperial court is empty."
It can also be seen from various TV dramas that Emperor was indeed an important figure in the Wu and Zhou Dynasties and made important contributions to the rule of Li Tang and Wu Zetian.