The Wang Mang reference article from the English Wikipedia on 24-Apr-2004
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Wang Mang

Wang Mang (王莽 Pinyin: Wáng Măng) (d. 24) seized the throne from Han royalty and founded Xin (新, means "new") Dynasty in 9 but was overthrown fourteen years later. The throne was then returned to Liu family.

Under his rule, the well-field system was suspended.

Xin Dynasty Sovereigns
Born Names Period of Reigns Era Names (Nian Hao 年號) and their according range of years
Wang Mang 9-23 Shijianguo (始建國 shi3 jian4 guo1, "Start to establish a nation") 9- 13
   Tianfeng (天鳳 tian1 feng1, "Heavenly Feng") 14-19
   Dihuang (地皇 di4 huang2, "Earthly Emperor") 20-23