King Mu came to the throne after his father King Zhao’s death during his tour to the South. King Mu was perhaps the most pivotal king of the Zhou dynasty, reigning nearly 55 years, from ca. 976 BC to ca. 922 BC. Mu was more ambitious than wise, yet he was able to introduce reforms that changed the nature of the Zhou government, transforming it from a hereditary system to one that was based on merit and knowledge of administrative skills.