Li Longji seized power through a coup and became the emperor of Jinglong for four years (7 10). Li Longji returned to Chang 'an, the capital of Shaanxi Province, from Luzhou. He secretly gathered talents and developed his power in the emperor's pro-army riding. When Emperor Taizong was in power, every official and brave man was chosen to wear tiger-patterned clothes, cross leopard-patterned spears, hunt from safari and shoot animals in front of horses, which was called Hundred Rides. Wu Zetian increased to thousand riding, and Li developed to ten thousand riding. Li Longji attaches great importance to the role of Wan Qi.

After the death of Wu Zetian, Li Xian was weak, and political power slowly fell into the hands of Wei Ruyun and Princess Anle. Zhang Jian, the heroic prime minister who staged a coup to restore the Tang Dynasty, was also demoted and expelled, and Prince Li Zhongjun was killed. Empress Wei followed the example of Wu Zetian and let her brother Wei Wenju take power. Instead of stopping her daughter Princess Anle from illegally selling official titles, she indulged. Jinglong four years (7 10), Zhongzong finally died in the hands of Wei Ruyun and Princess Anle who plotted to poison him. Then, Wei Ruyun wants to learn from her mother-in-law Wu Zetian and be the second queen. Li Longji (Emperor Xuanzong of the Tang Dynasty), his aunt Princess Taiping, Xue Chongjian, the son of Princess Taiping, and Zhong Shaojing, the director of the garden who had been waiting for Wei Ruyun to start work, plotted to strike first. It was suggested that the coup should be reported to Wang Xiang in advance. Li Longji said confidently, "I wanted to save the country, the monarch and the founding father, and my success was attributed to the ancestral temple and the country. When I failed, I died of loyalty and filial piety, and I didn't bring Wang Xiang into trouble. How can you report this and worry Wang Xiang? Now it is reported that if Wang Xiang agrees, he will be involved in a dangerous uprising; If he doesn't approve, my plan will fail. " So, I decided to act immediately behind the king's back.

In the first year of Tang Long (7 10), Li Longji and others entered the Forbidden Park in casual clothes and came to the residence of the director Zhong Shaojing. At this time, Zhong Shaojing repented and refused to participate in the coup. However, under the firm persuasion of his wife Xu Shi, Zhong Shaojing decided to participate in the coup. So I visited Li Longji. After nightfall, Wan Qiguo, Xian Fu, Ge Fushun, Chen and other officers came one after another, demanding an order. Finally, the coup was scheduled for the night of July 2 1. That night, Ge Fushun raided Yulin Camp, killed Wei Kuo, Weber and Gao Song, rebelled against Yulin Army, and drove straight into Xuande Gate. On the third night, Li Xianxuan also led his troops into Baishoumen and joined forces at Lingyange. Li Longji led the soldiers into the palace, and the soldiers guarding the palace rebelled in response. Wei Hou escaped into the Pegasus Camp and was beheaded. Zong Chuke, Princess Anle, Wu Yanxiu, Shangguan Waner and others were also killed one after another, and the city searched for Webster's group personnel. All those who were taller than the whip were put to death, which was called "the political revolution in Tang Long" in history. At this time, Li Longji reported the change of Tang Long to his father King Li Dan. King Xiang held Li Longji in his arms and cried, "You put down the disaster in the ancestral temple country, and the gods and the people depend on your strength." On that day, Li Longji was renamed Ping Wang, who was also the supervisor of the temple. He, like Zhongshu, has both ends meet. Li Longji and Princess Taiping forced Li Zhongmao to abdicate, and Li Dan was reinstated by Zong Rui. Zong Rui and the minister discussed the establishment of the prince. According to the eldest son inheritance system, Li Xian, the eldest son of the Song Dynasty, should be a prince, but Li Xian resolutely gave in and said: "National security comes first, national crisis comes first; Wang Ping has contributed to the country and he will never be above Wang Ping. " The heroes who participated in the elimination of the Wei Party also advocated the establishment of a prince. Zong Rui followed suit and made Li Longji the prince.

Chu Deng da Bao

Relying on her support for Zong Rui, Princess Taiping often intervened in political affairs. She thinks Prince Li Longji is very clever and prevents herself from participating in politics. She always wants to change the prince. Li Longji certainly doesn't want to be fooled, but she also wants to get rid of Princess Taiping. When Zong Rui was in trouble for the first time, he first listened to Princess Taiping's opinion, and then asked the prince's opinion. Later, I became more and more inclined to the prince. After Li Longji became a prince, the contradiction with Princess Taiping became more and more serious. In the first month of the second year of Jingyun (7 1 1), Princess Taiping invited the Prime Minister to Guangfanmen, Zheng Xuan Hall, and brazenly advised the Prime Minister to be a prince, but Song Jing sternly refused and the plot failed. The contradiction and struggle between Princess Taiping and the Crown Prince is getting more and more serious, and Zong Rui is uneasy about it. In February, he heard the warlock say that "there will be urgent soldiers entering the palace in five days", which made him more aware of the seriousness of the situation, so he issued an imperial decree and ordered the prince to supervise the country. Jingyun three years (7 12), Li Dan was afraid that things would go on like this, and Li Tang would be in chaos. Despite the opposition of Princess Taiping, she resolutely gave the throne to Li Longji and changed her mind. However, he still holds the power of state affairs: the appointment and dismissal of government officials above the third class and the power of military and political decision-making. Li Dan's abdication aggravated the contradiction between Li Longji and Princess Taiping. Both sides are accumulating strength to get rid of each other.

It is said that Princess Taiping, Dou Huaizhen, Cenxi, Xiao Zhizhong, Cui Kun, Prince Shaobao Xue Ji, Chang's Li Jin (the grandson of cousin Li Deliang), the Chinese calligrapher Li Yan, the right scattered rider Jia, the crack hon temple secretary, the left Yulin general Chang Yuankai, and the right Yulin military general Li Ying. There are even plans to poison Li Longji's diet. Wei Zhigu reported it to Li Longji. After consulting with Wang Cong, Zhang Shuo and Cui Yong, they decided to strike first, so they called their younger brothers Wang Qi Li Fan, Wang Xue Ye Li and Guo Yuanzhen, Longwu General Wang Maozhong and Shaojian Jiang Jiao in the temple, and a teacher and a young girl Li Lingwen, Shang Cheng Feng Yu Wang Shouyi (also the brother-in-law of Xuanzong), in-service Gao Lishi and Guo Yi Li Shoude took the lead.

In the second year of his birth (7 13), Li Longji ordered Wang Maozhong to arm more than 300 soldiers, each riding a horse. Led by Li himself, Gao Lishi, Guo Yi, and other cronies. He killed Chang Yuankai and Li Ci, the generals of Yu Lin, and captured Jia, the regular rider of Princess Taiping, and Li You, a calligrapher in China, and then killed Cenxi and Xiao Zhizhong, the prime ministers. Shang Shu's right servant shot Dou Huaizhen and committed suicide in chaos. Princess Taiping saw that her henchmen were exhausted, so she had to flee to the Buddhist temple and come back three days later. Emperor Li Dan came forward to ask Li Longji to pardon him for his death, but Li Longji refused, and Princess Taiping was finally given a gift to die at home, which was a "congenital coup". From then on, Emperor Xuanzong of the Tang Dynasty finally mastered the power that the emperor should have. This year, Li Longji changed his country name to Kaiyuan, which showed his determination to create great achievements in the Tang Dynasty.

Attached with Li Longji's resume, Li Longji (September 8, 685-May 3, 762), namely Emperor Xuanzong of the Tang Dynasty, was in office from the first year of his birth (7 12) to the fifteenth year of Tianbao (756) and abdicated due to the Anshi Rebellion. He was the longest-serving emperor in the Tang Dynasty and also the emperor in its heyday. Tang Ruizong's third son Li Dan, also known as Li Sanlang, is the mother of Dou Defai.

In the first year of Tang Long (7 10), Li Longji and Princess Taiping jointly launched the "Tang Long Political Rebellion" to destroy the Wei Hou Group. In the first year of his birth (7 12), Li Dan Zen was located in Li Longji, and he proclaimed himself emperor in Chang 'an Taiji Palace and changed to Kaiyuan. During the Kaiyuan period of Emperor Xuanzong of the Tang Dynasty, the society was stable, the politics was clear and the economy was unprecedentedly prosperous. The Tang Dynasty entered its heyday, which was later called Kaiyuan Shengshi. In the later period of Tang Xuanzong's life, he was fond of pleasure and trusted Li and other treacherous officials, which eventually led to the Anshi Rebellion and the decline of the Tang Dynasty. In the fifteenth year of Tianbao (756), Prince Hengli ascended the throne, honoring him as the emperor's father.

In the first year of Baoying (762), he died in the Shenlong Hall in Chang 'an at the age of 78, and was buried in Jinsu Mountain, named Tailing. Temple name Xuanzong, and because of its posthumous title as the most holy, Daming, filial emperor, Emperor Kangxi's name was taboo in the Qing Dynasty, often called Tang, and was honored as the Kaiyuan emperor.