Recalling the heyday of the kaiyuan in the past, Xiaoyi still hides thousands of families. Rice is white, and public and private warehouses are abundant. --Du Fu of the Tang Dynasty
The Tang Dynasty was the peak of ancient China. The peak period of the Tang Dynasty's national strength was the Kaiyuan prosperous era created by the Tang Xuanzong era. At that time, there were many talents, the people lived and worked in peace and contentment, and there was peace inside and outside. In the later period, An Lushan united with foreign tribes to rebel, Tang Xuanzong fell heavily from the throne, and the Tang Dynasty also rapidly declined because of the "Anshi Rebellion", laying the foundation for the demise of the Tang Dynasty.

When the Tang Dynasty was at its strongest, it was disrupted by the rebellion of An Lushan. Many people have calculated the account of the decline of the Tang Dynasty to the head of An Lushan. If it were not for him, the prosperity of the Tang Dynasty would surely have lasted longer. However, a copy of the National Library of Paris, "Feng Changqing Xie Death Report", revealed the truth about the demise of the Tang Dynasty. All this was caused by Li Longji.
People born in The age of Li Longji are very happy, but at the same time very sad. They felt the most prosperous side of the Tang Dynasty, and at the same time experienced the war and chaos to see the country rapidly destroyed, this gap is really unbearable. Du Fu expressed this sentiment in "Remembrance of the Past", when he just said, "Rice is fat and corn is white, and public and private warehouses are abundant." In the blink of an eye, it is "I don't know if it is a silk straight ten thousand dollars, there are fields and grains that are bleeding now." "The early Kaiyuan years were enviable, and the later Kaiyuan years were heart-wrenching.
Tang Xuanzong was able to open up the "Kaiyuan Prosperous Era", proving that he was capable. In the appointment of talents, Tang Xuanzong had a unique vision and always chose the most suitable person for the development of the Tang Dynasty at present. After Li Longji took the throne, the country was still in chaos, and it was necessary for a person to use powerful means to rectify the rule of officials. Li Longji chose Yao Chong, who was resourceful and decisive. With the help of Yao Chong, the country is on the right track.
Li Longji believed that Yao Chong's practice of engaging in small cliques was not good and that he should govern the country according to law, so he chose Song Jing, who paid attention to principles and did not bend the law for personal gain. It was good that Song Jing obeyed the rules, but he would not be flexible and too conservative, and in the end Tang Xuanzong took advantage of his work mistakes to depose Song Jing. Song Jing was replaced by Zhang Shu, who was both literate and martial. With his assistance, the Tang Dynasty reached its peak.
In the late tang dynasty, Tang Xuanzong seemed to have changed into a person. Once his selection and employment valued talent, once opposed extravagance and waste, even if there is a place management to offer gifts, he will be blamed by him, there is a great sense of chastity. In the late stage, Tang Xuanzong was simply willful and arrogant, letting go of himself. Extravagance and waste are not to be said, and the selection of talents at will has laid hidden dangers for the decline of Datang.
Tang Xuanzong's late extravagance can be seen from how he treated Yang Yuhuan. Yang Yuhuan liked to dress up, and Tang Xuanzong arranged for more than 700 people to make clothes for her, which was extremely luxurious. Yang Yuhuan liked to eat lychees, so Tang Xuanzong opened up a special road to let the people of the station quickly carry lychees. As long as Yang Yuhuan was happy, Tang Xuanzong could do anything. The official position was also given to Yang Yuhuan's brothers and sisters at will, like a gift. In particular, Yang Guozhong also sat all the way to the position of prime minister.
village. In the fourteenth year of Tianbao, An Lushan colluded with foreign tribes to rebel, and the Tang Dynasty army was gradually defeated. People did not blame Tang Xuanzong, but instead let a woman bear all the faults. In 756, Yang Yuhuan was given death at Ma Songyi. Once the favor ceased to exist, Emperor Xuanzong of Tang was able to preserve the title of emperor.
In fact, from the suicide note "Feng Changqing Xie Death Statement" preserved in the National Library of Paris, it can be known that the real culprit is Li Longji. After An Lushan's rebellion, Li Longji sent Feng Changqing and Gao Xianzhi to stay in Luoyang. Luoyang fell, and Feng Changqing knew that he would not be able to escape death, and some words were not happy, so he wrote the "Feng Changqing Xie Death Statement" and presented it to Tang Xuanzong.
The letter reads, "The soldiers of the subjects are all rabble-rousers, and they have never been trained..... Fear of going against the power of Hu to defeat the power of the King's Division.... After the death of his subjects, I hope that His Majesty will not take this thief lightly, and if he does not forget his subjects' words, he will hope that the society will be restored. Feng Changqing did not think that the defeat was his fault, but because the team was all untrained people. He thought that Tang Xuanzong had despised An Lushan's strength and must be more careful.
It was a pity that Tang Xuanzong did not heed Feng Changqing's advice and insisted that Ge Shuhan lead his troops to a decisive battle with An Lushan. At Tongguan, 200,000 Tang dynasty soldiers were slaughtered, and the Tang army was defeated. Since then, the Tang forces have been defeated and retreated, and Tang Xuanzong had to flee with Yang Yuhuan. The victory of An Lushan and the defeat of Tang Xuanzong also announced the end of the "Kaiyuan Prosperous Era", and the Tang Dynasty began to decline from the prosperous world. In all this, Li Longji will definitely have to bear responsibility.