The Book of Changes, also called the Book of Changes,
Han: Xiang Yu named Liu Bang the King of Han. Later, Liu Bang defeated Xiang Yu and unified China, and the country was called "Han". The capital of the Han Dynasty was Chang'an in the early period, and Luoyang in the later period. Therefore, there are "Western Han" and "Eastern Han" in terms of capitals, and "Previous Han" and "Later Han" in terms of time.
Jin: Sima Zhao forced Wei Di Gua He was the "Gong of Jin", and after the destruction of Shu, he became the king of Jin. Later, his son Si Yan inherited his title, forced Emperor Wei to abdicate, and proclaimed himself emperor, with the country named "Jin". divided.
Sui: Yang Zhong, the father of Emperor Wen of the Sui Dynasty, Yang Jian, was once named "Sui Guogong" by the Northern Zhou Dynasty. Emperor Wen of the Sui Dynasty inherited this hexagram title and called it "Sui Chao". He thought that the meaning of Suiyouweng was changed to "Sui" for fear of being ominous.
Tang Dynasty: Li Hu, the grandfather of Li Yuan, the emperor of the Tang Dynasty, assisted Zhou Dynasty with meritorious service, and was named "Tang Guogong", and the title was passed to Li Yuan. After Taiyuan raised troops, Li Yuan was called "King of Tang", and he later deposed Yang You and established the Tang Dynasty.