从善如登
  1. Good example from the board, from the evil such as the collapse
      Explanation: Means as good as mountain climbing is not easy to learn difficult metaphor
      Usage: The main predicate; as predicate; analogy is difficult to learn
      Source: "Singer of the song": "proverb said: If from a good board, such as the collapse from the evil." Wei Zhao Note: "If Gordon, Yu difficult; such as collapse, Yu and easy."