Han Chinese and foreign scholars have long maintained that Confucius was deeply inspired by the Zhou revolution and its leaders. It was thought the great teacher studied this period and its leaders through documents that included the Zhouyi. Though there is no real evidence to prove that Confucius studied the Zhouyi, the influence of its wisdom is easy to find in the Classical Confucian teachings on statecraft and leadership. In fact, the Confucian interpretations of the Zhouyi have become more important in the Chinese tradition than the original Zhouyi itself. The Confucian commentaries that were added to the Zhouyi transformed it into the Yijing (I Ching).