As early as the Ming Dynasty, steles bearing the Six Teachings were erected at the entrances of villages and streets across the land. The content is the “Twenty-four Characters of Moral Norms” prescribed by the Ming Taizu, Zhu Yuanzhang, for the people of all under heaven: “Be filial to parents, respectful to elders, harmonious in the locality, instruct children, ensure peace for all, and avoid improper deeds.”