金口木舌
      Explanation: The wood for the tongue of the bells, that wood Duo, ancient Shixing Zheng spread command used to teach. Means to promote enlightenment of people.
      Source: Han Yang Xiong "law school made the line": "heaven is not ZENY Down? ZENY driving that those who are; not hereby Confucianism Down? Such as the re-drive it said, is to make Zhuru Chrysostom and wood Morrow the tongue. "