(1) has made great progress in the construction of Taoist theory. In the Tang Dynasty, many Taoist scholars emerged, such as Sun Simiao, Cheng, Li Rong, Wang Xuanlan, Sima, Wu Yun, Li Quan, Shi Jian Wu and Du Guangting. All-round development has been made in Taoism's teachings, teachings and cultivation methods. Due to the vigorous advocacy of the royal family in the Tang Dynasty, the study of Laozi and Zhuangzi became a common practice in the Tang Dynasty. At that time, princes, Confucian scholars and Taoist priests studied and commented on Laozi and Zhuangzi in succession. According to incomplete statistics, there are nearly 30 annotated works about Laozi in Sui and Tang Dynasties. There are many theoretical works influenced by Laozi and Zhuangzi's thoughts, such as Xuan Tong's On Tao and Body and Sima's On Sitting and Forgetting. In particular, the metaphysical school represented by Cheng and Li Rong had a great influence on the development of Taoism at that time and later.
(2) Taoist books increased, compiled into collections and officially published. Taoist classics in the Tang Dynasty were collected and compiled in Kaiyuan (7 13-74 1), with a total of 3,744 volumes (5,700 volumes). In the seventh year of Tianbao (748), the imperial edict was widely circulated and named "Kaiyuan Daocang". This is the first Tibetan collection in the history of China.
(3) Taoism and Taoist rituals developed systematically in the Tang Dynasty. Zhang Wanfu, Zhang Jixian and Du Guangting, Taoist priests in the late Tang Dynasty and the Five Dynasties, systematically arranged, added and deleted Taoist priests, precepts and doctrines, making them richer and more complete. In particular, the Complete Works of Taoist Models (87 volumes) written by Du Guangting (850-933) in the late Tang and Five Dynasties unified and standardized the ritual vessels of the main schools of Taoism and integrated the ritual vessels of the Tang Dynasty. Most of the Taoist schools he formulated were adopted by later Taoists.
(4) Neixian Taoism developed greatly in the Tang Dynasty. Although alchemy (taking medicine from outside alchemy) was in the prosperous stage in the Tang Dynasty, it was in decline. Because taking elixir has side effects, it promotes the transformation of elixir from external elixir to internal elixir. Inner alchemy can be traced back to ancient magic. In the Tang Dynasty, Taoism in Neidan was influenced by Jiao Da, and Taoist books appeared one after another. For example, Cui Xifan's Medicine Mirror, Wu Yun's Nine Chapters of the Southern Master's Inner Dan, and Zhi Tao's Tao Zhenren's Inner Dan Fu, etc. By the end of the Tang Dynasty and the Five Dynasties, Taoist inner alchemy became popular. During this period, Zhong Liquan and Lv Dongbin were famous advocates of Neidan Road. Therefore, the inner alchemy advocated by him is called Lv Zhong's then alchemy. The Quanzhen school of Taoism in later generations is Zunzhong and Lu Wei.
(5) Taoist temples are not only spread all over the country, but also increasingly large in scale. Since the formation of the Taoist temple system in the Southern Dynasties, Taoist temples have gradually increased. By the Tang Dynasty, Taoist temples were almost everywhere in famous mountains and cities. According to "Du Guangting (884) and December 15th, four years", since the establishment of the Tang Dynasty, "there are about 1.900 temples, involving more than 50,000 people, but excluding princes, nobles, officials, scholars and houses". Among them, the Taiqing Palace, Taiwei Palace and Wei Zi Palace, which are mainly dedicated to Laozi, are comparable in scale to the imperial palace and have a direct impact on the architectural scale and art of Taoist temples in the future.
(6) The larger Taoist school in Tang Dynasty was Maoshan School, followed by Louguan School and the revival of Zhang Tianshi. In the seventh year of Tianbao in the Tang Dynasty (748), Xuanzong ordered the relevant departments to examine and approve Zhang Tianshi's descendants and seal them, with Long Zhensi as the heir and the ancestor as the grandmaster. In the middle and late Tang Dynasty, the Stone Heaven Road in Longhu Mountain, the so-called Longhumen Gate, was gradually formed. With the support of the emperor, this school developed rapidly, which laid the foundation for the prosperity of Taoism in Shi Tian, Longhu Mountain after the Song and Yuan Dynasties.
Louguan School is another school that rose in the north after the new Taoism of the Northern Wei Dynasty. Take Louguan in zhouzhi county, Shaanxi as the activity center. According to legend, Louguan was Yin's former residence built by Guan Zhou. In the second year of Jin Yongxing (305), Yin's younger brothers, Tai and Zhen Yin Gui, descended to Gu Lou Pass and gave them to Taoist Liang for writing. During the Jin Dynasty, there were few Taoist priests in Louguan. During the reign of Emperor Taizu of the Northern Wei Dynasty (424-428), Yin Tong, a Taoist priest, served Master Ma Jian in Louguan. His Taoist skills were refined and his reputation spread far and wide, and he was deeply loved by Emperor Taizu. So Hou, Yin Faxing and others followed suit, and the number of Taoist priests increased to more than 40. Later Wang, Chen Baochi and Li Shunxing were all respected by the world. The number of Taoist priests in Louguan gradually increased. The peak of Louguan Road began in the Northern Zhou Dynasty. Yuwen Yong, the Emperor of the Northern Zhou Dynasty, praised Wang Yan and Yan Da Taoist priests. After abolishing Buddhism and Taoism, he absorbed a large number of Taoist priests from Lou Guan into the canal. During the reign of Emperor Wendi of Sui Dynasty, Louguan Palace was rebuilt, and there were Taoist priests 120 people, with exquisite feathers and worshipping in the ruling and opposition parties. At the beginning of the Tang Dynasty, Gaozu also attached great importance to the construction of the concept. In the seventh year of Wude (624), he began to pay attention to the construction of the concept and worshipped Laozi. During the reign of Emperor Gaozong, Yin Wen, a Taoist in Louguan, taught Dr. Yin Lu to be too vulgar and too young. Generally speaking, Louguan Taoism has been the largest Taoist school in the north from the Sui Dynasty to the early Tang Dynasty, and it has been relatively prosperous with the support of emperors in previous dynasties. After the An Shi Rebellion, Fang gradually declined. During the reign of Jin Aizong Tianxing (1232— 1234), the building was burned down because of the large number of soldiers. Quanzhen Road was restored in Yuan Dynasty, and Louguan Road was merged into Quanzhen Road. Louguan Taoism attaches great importance to the Tao Te Ching, which is the main classic.