风雷之变
      Explanation: Calamity refers to the phenomenon of God's warning.
      Source: According to the "book of gold tie up" _set_ after the death of King Wu of Zhou, Zhou Gongshe government, repression of the younger brother of King Wu Guan Shu and Cai Shu and other rebels. Wuwang Zi Cheng Wang effects due to rumors, doubt the loyalty of the Duke of Zhou, then big thunder and lightning to wind, to make Yan Wo, Tai Musi pull, the state Congress fear. "
      Examples: Summer in April, the Imperial earthquake. Chen praised the Calamity Kimi Sagong free. So even worse ~, You Si blame Excellencies complex to recover. ★ "under the Later Han Jian Di Ji"