For 10 points, name this author of the Comprehensive Mirror in Aid to Governance or Zizhi Tongjian [zuh-zhuh tohng-jyen], a conservative opponent of Wang Anshi.
This historian argued that Mencius was incorrect in condemning hegemons, or ba, and praising kings, or wang, arguing the two terms simply denoted different types of ruler in the Eastern Zhou period; that book is presented in a history that begins with the reign of King Weilue [way-lway]. According to a popular children's story about this historian's childhood, he took a rock and smashed a vat full of water to save a drowning boy after the other children fled. An outline of this historian's major work is provided in abridged "gangmu" version by (*) Zhu Xi [zhoo shee]. This historian was provided an elite team of assistants by emperor Yingzong of Song to compile a history of China from the 5th century on, taking 19 years to do so while he worked to reverse the New Policies of his major political rival. For 10 points, name this author of the Comprehensive Mirror in Aid to Governance or Zizhi Tongjian [zuh-zhuh tohng-jyen], a conservative opponent of Wang Anshi.
This historian argued that Mencius was incorrect in condemning hegemons, or ba, and praising kings, or wang, arguing the two terms simply denoted different types of ruler in the Eastern Zhou period; that book is presented in a history that begins with the reign of King Weilue [way-lway].
Sima Guang [prompt on partial answer]