Sima also broke new ground by using more sources like interviewing witnesses, visiting places where historical occurrences had happened, and examining documents from different regions and/or times. Before Chinese historians had tended to use only reign histories as their sources. The "Shiji" was further very novel in Chinese historiography by examining historical events outside of the courts, providing a broader history than the traditional court-based histories had done. Lastly, Sima broke with the traditional chronological structure of Chinese history. Sima instead had divided the "Shiji" into five divisions: the basic annals which comprised the first 12 chapters, the chronological tables which comprised the next 10 chapters, treatises on particular subjects which make up 8 chapters, accounts of the ruling families which take up 30 chapters, and biographies of various eminent people which are the last 70 chapters. The annals follow the traditional Chinese pattern of court-based histories of the lives of various emperors and their families. The chronological tables are graphs recounting the political history of China. The treatises are essays on topics such as astronomy, music, religion, hydraulic engineering and economics. The last section dealing with biographies covers individuals judged by Sima to have made a major impact on the course of history, regardless of whether they were of noble or humble birth and whether they were born in the central states, the periphery, or barbarian lands. Unlike traditional Chinese historians, Sima went beyond the androcentric, nobility-focused histories by dealing with the lives of women and men such as poets, bureaucrats, merchants, comedians/jesters, assassins, and philosophers. The treatises section, the biographies sections and the annals section relating to the Qin dynasty (as a former dynasty, there was more freedom to write about the Qin than there was about the reigning Han dynasty) that make up 40% of the "Shiji" have aroused the most interest from historians and are the only parts of the "Shiji" that have been translated into English.