This should be a chronological style, which was a theme created by Ban Gu in the Eastern Han Dynasty at that time. Like Sima Qian's creation, it is also a creation of China's historical genre. In addition, there are themes such as notepad chronology, which are very important contributions to the development of culture at that time and have far-reaching significance.
Hanshu, also known as pre-Hanshu, is the first biographical dynastic history in China and one of the "twenty-four histories". It was compiled by Ban Gu, a historian of Han and Eastern Han Dynasties. It lasted for more than 20 years and was basically completed at the initial stage of construction.