After the death of Emperor Taizong of the Tang Dynasty, Li Zhi succeeded to the throne, but Emperor Gaozong of Tang had a meek personality, and this character, as the second-generation heir of Li Tang, obviously faced with the obedience of those ministers who had followed Emperor Taizong all his life, and some dared to be angry and did not dare to speak. This is especially obvious in the face of the eldest grandson Wujie, Chu Suiliang and other ministers who take care of the order, which shows that the imperial power has been deprived too much.
In this regard, the emergence of Wu Zetian is also a historical necessity, even if there is no Wu Zetian, there may also be Liu Zetian, Wang Zetian or as Huo Guang during the Period of Emperor Wu of the Han Dynasty, and it is difficult to ensure that the Tang Dynasty will not change its lord.

The emergence of Wu Zetian is also in accordance with the law of history, during his reign after various reforms, the Tang Dynasty under the heavens rich and strong, the imperial power can be highly concentrated, but the revolution will be shed blood and sacrifice, the process of reform will inevitably touch the interests of vested interests, the so-called "xing, the people suffer, forget, the people suffer", so as long as the country is stable, the people live and work in peace and contentment of the emperor, is a good emperor, it is difficult not to become "the prince will have a kind of peace" Cry is an empty phrase.
After her death, she entered the Qianling Tomb and erected a wordless monument, which I think may also be that she knew that her appearance in that era was a great rebellion, which is why her merits were left to the world to comment.
Personally, I feel that The third son of Emperor Taizong, Li Ke, the King of Shu born to the Yang clan, was decisive in handling things and had both moral integrity and ability, and perhaps it was more suitable to succeed Li Tangtianxia, but Taizong was heroic and heroic, and when he was old, he listened to the words of his eldest grandson Wujie and did not establish him as the first successor of the Tang Dynasty, which I think is also a regret of a lifetime.