Saint Amethyst is a precious cultural heritage of the Chinese nation. Short, pithy and catchy, it has been a household name for thousands of years. Its content covers history, astronomy, geography, morality and some folklore. The so-called "familiar with the three-character classics, you can know the great events of the ages." Because of its unique ideological value and cultural charm, it has been regarded as a classic by Chinese people throughout the ages and spread continuously.