Zhang Cambodia went on to talk about the prosperity of the early Tang Dynasty -

The rise of the Tang Dynasty was due to the Qin king Li Shimin, who was distinguished by his military prowess and led his army to many key victories. In 626, Li Shimin launched the Xuanwumen Rebellion, killing the crown prince Li Jiancheng and Li Yuanji, the king of Qi, and controlling Chang'an. Li Yuan knew the situation well, so Chan gave up the throne and became the emperor. Li Shimin succeeded to the throne, that is, Tang Taizong.

Emperor Taizong of the Tang Dynasty made great efforts to govern the country and gradually restored the national strength of the Tang Dynasty. In terms of internal affairs, Emperor Taizong of the Tang Dynasty implemented the equalization of land and the regulation of rents to enhance agricultural development. In terms of the official system, the system of the Sui Dynasty was reformed, and the system of selecting scholars in the three provinces and the imperial examination was formed, and the vices such as restricting the development of imperial power and the hereditary lineage of the nobility were restricted. Regardless of his background, Tang Taizong recruited a large number of shrewd and capable ministers, such as Fang Xuanling, Du Ruhui, Changsun Wuji, Wei Zheng, Ma Zhou, Gao Shilian and Xiao Yu and other civil servants, as well as a group of military generals such as Wei Chi Jingde, Li Jing, Cheng Zhijie, Li Shiyun and Qin Shubao. In addition, the Tang Taizong sent officials to inquire about the living conditions of the people, and then wrote the merits and demerits of each official on the screen in order to praise and disparage.

Externally, Tang Taizong adopted the strategy of active defense, ending the war with war, and pacifying the Quartet with restraint and force. At the end of the Sui Dynasty and the beginning of the Tang Dynasty, the Eastern Turkic Khanate in the north was very powerful, often invading the south and intervening in various forces in the Central Plains. In the early days of the Tang Dynasty, the Eastern Turks suddenly attacked Chang'an in 626 and led their troops to Jingyang, which was not far from Chang'an. In this regard, Tang Taizong led Gao Shilian, Fang Xuanling and others to confront the Turkic Khan across the Weishui River and set up an alliance with Weishui.

After that, Tang Taizong actively dealt with the Turks, provoking the relationship between Jieli Khan and the Turkic Khan, as well as the relationship between the Turks and the surrounding tribes. In 627, the Eastern Turkic vassals Xue Yantuo, Hui Hui, Bayegu, and Tongluo disagreed with Jieli Khan's decree and reformed national customs, so they broke away one after another and renamed Xue Yantuo as Khan, and Tuli Khan also surrendered to the Tang Dynasty. In 628, Liang Luoren, a Shuofang man, killed Liang Shidu in Xiazhou and surrendered to the Tang Dynasty. After the split, the Eastern Turks were hit by heavy snow, and most of their livestock were frozen to death and starved to death. In 629, Li Jing led a surprise cavalry attack to destroy the Eastern Turks, and the following year, all the northern ethnic groups paid tribute to Chang'an, and the ethnic groups honored Tang Taizong as the Heavenly Khan. In 635, he sent Li Jing to capture Tuyuhun, in 657 he sent Su Dingfang to conquer the Western Turkic Khanate, and in 641, he sent Princess Wencheng to intermarry with Tubo Zanpu Songtsen Gampo. All of these stabilized the Tang Dynasty's relations with the countries of the Quartet.

During the Zhenguan period, the country was stable, the economy was restored and developed, and the history was called "the rule of Zhenguan".

In the fourth year of Zhenguan (630), a bucket of rice was only three or four dollars, and there were only twenty-nine condemned prisoners in the whole year. The summary of his political achievements, "Zhenguan Political Leaders", became a textbook for the governance of Japan and the Silla emperors, and was also the object of study for later monarchs.

During the reign of Tang Taizong, there was an infighting between the crown prince Li Chengqian and the king of Wei, Li Tai. Therefore, Tang Taizong abolished Li Chengqian, expelled Li Tai, and renamed Li Zhi, the king of Jin, as the crown prince.

Tang Taizong Li Shimin ordered the repair of Luoyang City, known as Luoyang Palace. He came to Luoyang three times to deal with government affairs and foreign affairs, and lived in Luoyang Palace for two years. In the twenty-third year of Tang Zhenguan (649 AD), Gaozong Li Zhi ascended the throne. In the sixth year of Yonghui (657 AD), they came to Luoyang together to deal with national affairs here, taking Luoyang as the eastern capital. In fact, the capital of the Tang Dynasty had migrated from Chang'an to Luoyang. Tang Xuanzong reigned for 44 years, and Luoyang for 10 years. After the Anshi Rebellion, the power of the Tang Central Committee was greatly weakened, and the power of the Jiedu envoys became more and more powerful. In 904 A.D., Xuanwu Jiedu envoy Zhu Wen, sent troops to Chang'an, and held the Tang Emperor (Zhaozong) hostage and moved the capital to Luoyang. In 907 AD, Zhu Wen abolished the Tang Emperor (Aizong), and the Tang Dynasty died. Since then, there have been five dynasties and ten kingdoms in Chinese history. During the Tang Dynasty, both the East and the West were important, and Luoyang and Chang'an were both famous capitals in the world. The Tang Dynasty had 6 emperors in Luoyang, including Tang Gaozong, Zhongzong, Ruizong, Xuanzong, Zhaozong, and Aizong, for more than 30 years.

After the death of Taizong of Tang, Li Zhi ascended the throne, that is, Gaozong of Tang. At this time, the Tang Dynasty inherited the rule of Zhenguan, and the national strength was at its peak, and it was known as the rule of Yonghui in history. At that time, there were generals such as Li Tao, Su Dingfang, Xue Rengui, etc., and famous ministers Sun Wuji, Chu Suiliang, etc. Internally, the system of equalizing fields was continued to be implemented, and lower-level but talented officials were selected. In 659, the Western Turks were eliminated, and the territory expanded westward to the Aral Sea and the Amu Darya River, and the Anxi Protectorate was established in Shaye City. In addition, sixteen governors were set up in the west of the Green Mountains, and Central Asian monarchs such as Tocharian Yehu and King Hadarozhi served as governors. In the east, he joined forces with Silla to destroy the northeastern powers of Goguryeo and Baekje, and defeated Japanese reinforcements at the Battle of Baekgang Estuary. The Tang Dynasty established the Andong Protectorate on the Korean Peninsula, which also indirectly prompted Silla to unify the Korean Peninsula.

After the middle of Gaozong, the power was gradually held by Empress Wu Zetian. Wu Zetian was originally a talented person during the Taizong period, and was recruited into the palace by Gaozong after Taizong's death. She won the power struggle and was made empress, and was known in history as "a wise man and a writer and a historian". From 656 onwards, due to health reasons, many political affairs were gradually handed over to Wu Zetian, who became one of the supreme rulers, and was called the "Two Sages" along with Gaozong. After the death of Gaozong, the crown prince Li Xian ascended the throne as Tang Zhongzong. Because of disagreement with Zhongzong, Wu Zetian soon abolished Zhongzong as the king of Luling and renamed the fourth son Li Dan as the emperor, which was for Tang Ruizong.

After Wu Zetian pacified Xu Jingye's rebellion, he abolished Ruizong in 690, that is, the emperor's throne, changed the name of the country to Zhou, that is, Wu Zhou, set the capital of Luoyang (known as the divine capital), and renamed Li Dan as the emperor's heir, becoming the only female emperor in history.

During the period when Wu Zetian was in power and became emperor, the country had greater development than during the Zhenguan period. the continued implementation of the equalization system to develop agricultural production; The imperial examination system was further improved, and the palace examination and martial arts examination were created. Wu Zetian cracked down on the Guanlong clique since the Northern Zhou Dynasty and vigorously promoted officials from the imperial examination, who were called "Beimen Scholars" at the time, and many of them were scholars from the Kanto and Jiangnan regions. and vigorously promote talents, such as Di Renjie, Yao Chong and other famous generals.

Culture and art also progressed, when Buddhism flourished, and Buddhist temples were built frequently during the Wu and Zhou dynasties.