According to the standard of "ancestors made meritorious deeds, ancestors had virtue", the founding monarch is generally the ancestor and heir with the ability to govern the country. Since the Tang Dynasty, the temple name of the founding emperor of the dynasty is usually "Taizu", and the temple name of the second generation emperor is often "Taizong". If the imperial system of a dynasty changes, its temple name is "Sejong" or "Sejong". But these are not necessarily guidelines. Sun Quan's "Forty is Wu's throne, seven years; Acceded to the throne in 47 years, collapsed in 24 years and 70 years. The princes held the great emperor, and the temple name was Taizu. " Sai-jo generally refers to the beginning of a dynasty, which is the specific temple number connecting the preceding with the following between the pioneers of dynastic history or dynasties, but it can also be used as the temple number of the founder. Cao Pi's temple name is Gaozu, but it can also be called Wei Shizu. Sun Xiu is Emperor Wu Jing of posthumous title. He has no temple name and Sun He has never been an emperor. His son, Emperor Wu of posthumous title, has no temple name. Emperor Taizong and Sejong believed that Sun Xiu was the second generation emperor (Sun Liang was abolished) and Sun He was the third generation emperor. After the Huns, Liu Yuan proclaimed himself emperor and honored Liu Chan as "Emperor Huai of Han Dynasty", with the temple name Renzong.