The scholar Tei Junsoku brought back from China the maxims, Rikuyuengi, known as the “Six Courses in Morals.” The maxims would later become the elemental ideas of ethics used in the Japanese education system.
Tei Junsoku held the aristocratic positions and titles of Shikan-daifu, Kume-mura Souyaku, Sanshikan-zashiki, Sou-jito of Nago Magiri, and the scholar and educator of the Ryukyu. During his four trips to Qing China, he brought back the maxims, Rikuyuengi, known as the “Six Courses in Morals.”, spread it in Ryukyu and then he presented it to the Edo shogunate via the Satsuma clan. The Rikuyuengi later became the elemental ideas of ethics used in the Japanese education system. The Shogun Yoshimune had the maxims translated into Japanese so he could use it deliver the rules of ethics in enhancing the Bakufu system. Tei Junsoku had become known throughout the country because of the shogunate’s efforts in spreading his ideas. Tei Junsoku gave easy explanations and composed Ryukyuan hiragana poems in teaching and disseminating the Rikuyuengi. He is considered as a great scholar and oftentimes is called the Saint of Nago. He also authored a book on safe sea navigation called, Shinan Kougi. His monument is located in the hilly area of the Tenson-byou.