The Tang Dynasty was one of the longest unified and most powerful dynasties in Chinese history. Founded by Li Yuan in 618, the capital was Chang'an (now Xi'an). In 627, Li Shimin ascended the throne and created the "rule of Zhenguan", after Tang Gaozong, Wu Zetian once moved the capital to Luoyang for 15 years to the Zhou Dynasty Tang (690-705), known as Wu Zhou, in 705 Tang Zhongzong restored the Tang Dynasty name, and returned the capital to Chang'an. After Tang Xuanzong Li Longji ascended the throne, he created the heyday of the "Kaiyuan Dynasty". After the Anshi Rebellion, the country's strength was declining. In 907, Zhu Wen usurped the Tang Dynasty, and the Tang Dynasty fell. The Tang Dynasty had a total of 289 years and 20 emperors. The Tang Dynasty's reputation spread far and wide, with contacts with countries in South Asia, West Asia, and Europe. After the Tang Dynasty, overseas people mostly called Chinese "Tang people". Tang poetry, science and technology, culture and art are extremely prosperous and have diversified characteristics.
