 Bu Quan () was known later as the "Nan Qian" (), from the belief that if a woman wore this on her sash, she would give birth to a boy.Eventually, Wang Mang's unsuccessful reforms provoked an uprising, and he was killed by rebels in AD 23.In 220, the Han Dynasty came to an end, and was followed by a long period of disunity and civil war, beginning with the Three Kingdoms period, which developed from the divisions within the Han Dynasty.