Hungarian chronicles, which were compiled in the reign of kings descending from his mutilated brother and nephew, depict Coloman as a bloodthirsty and unfortunate monarch.
The legal tract known as Laws of the Brets and Scots, probably compiled in the reign of David I, underlines the importance of the kin group as entitled to compensation for the killing of individual members.
The legal tract known as Laws of the Brets and Scots, probably compiled in the reign of David I, set out a system of compensation for injury and death based on ranks and the solidarity of kin groups.
The Tangshu (Old Book of Tang) compiled in the year 945 recorded that in 828 the Tang government issued a decree that standardized irrigational square-pallet chain pumps in the country: The last great ambitious ruler of the Tang dynasty was Emperor Xianzong (r. 805 820), his reign period aided by the fiscal reforms of the 780s, including the government monopoly on the salt industry.
The material compiled in Alfred's reign included annals relating to Kentish, South Saxon, Mercian and, particularly, West Saxon history, but, with the exception of the Cynewulf entry, does not gather momentum until it comes to the Nordic invasions of the late 8th century onwards.
The latter was compiled during the reign of Li Shimin, and therefore enhances his own role, having him decide the battle in a cavalry charge, while denigrating the role of both his father and his elder brother Li Jiancheng, whom Li Shimin would murder and supplant on the throne.
Charters, which recorded royal grants of land to individuals and to religious houses, provide further information on Coenred's reign, as does the Anglo-Saxon Chronicle, compiled in Wessex at the end of the 9th century.
The Orkneyinga saga was compiled in about 1200, and documents the reigns of the earls of Orkney.
The Koji-ki (compiled in ad 712) related events under the reign of each emperor without a strict chronological order.
Code breakers The Gregorian Codex – or the Codex Gregorianus – was compiled during the reigns of a string of Roman emperors, from Hadrian (117-138 AD) to Diocletian (284-305 AD).
Of the mathematical problems contained in the first book, about two-thirds are thought to have been incorporated in Yang Hui's Xiangjie jiuzhang suanfa ("A Detailed Analysis of the Nine Chapters on the Mathematical Procedures"), compiled in 1261 and preserved in manuscript form in the Yongle dadian (1408; "Great Encyclopaedia of the Yongle Reign") and in a printed edition from 1842.
