Di enabled his own succession by claiming three bodies charred beyond recognition as the Jianwen Emperor, his consort, and their son but rumours circulated for decades that the Jianwen Emperor had escaped in disguise as a Buddhist monk. Having captured the capital, Zhu Di now left aside his former arguments about rescuing his nephew from evil counsel and voided the Jianwen Emperor's entire reign, taking 1402 as the 35th year of the Hongwu era. His own brother Zhu Biao, whom the Jianwen Emperor had posthumously elevated to emperor, was now posthumously demoted; Zhu Biao's surviving two sons were demoted to commoners and placed under house arrest; and the Jianwen Emperor's surviving younger son was imprisoned and hidden for the next 55 years. After a brief show of humility where he repeatedly refused offers to take the throne, Zhu Di accepted and proclaimed that the next year would be the first year of the Yongle era. On 17 July 1402, after a brief visit to his father's tomb, Zhu Di was crowned emperor of the Ming dynasty at the age of 42. He would spend most of his early years suppressing rumours and outlaws. Becoming the emperor With many scholar-bureaucrats in Nanjing refusing to recognise the legitimacy of his claim to the throne, the Yongle Emperor began a thorough purge of them and their families, including women and children. Other supporters of the Jianwen Emperor's regime were extirpated throughout the country, while a reign of terror was seen due to eunuchs settling scores with the two prior administrations. Chinese law had long allowed for the execution of families along with principals: The Classic of History records insubordinate officers being threatened with it as far back as the Shang dynasty. The Hongwu Emperor had fully restored the practice, punishing rebels and traitors with death by a thousand cuts as well as the death of their grandparents, parents, uncles and aunts, siblings by birth or by bond, children, nephews and nieces, grandchildren, and all cohabitants of whatever family, although children were sometimes spared and women were sometimes permitted to choose slavery instead. Four of the purged scholars became known as the Four Martyrs, the most famous of whom was Fang Xiaoru, the former tutor to the Jianwen Emperor: threatened with execution of all nine degrees of his kinship, he fatuously replied "Never mind nine! Go with ten!" and alone in Chinese history he