This study explains Jijanggan, which is one of the three principles of Ming Li Theory and called another name as the human principle. Jijanggan consists of the ten Cheongan, which is called the sky principle and the twelve Jiji, which is called the earth principle.
Ming Li Theory has been used for figuring out a person's destiny in field routine with Sajupalja and has changed its interpretation according to times as a study to interpret Saju. The current Theory is Japyeong Theory organized by Seogeoi(Seojapyeong) in Song Dynasty, which uses remaining Ganji on the basis of Cheongan of a birthday in order to predict destiny. Among theories used to translate Saju of Japyeong Theory there are Gyeokguk, Yongsin, Singangsinyak of Ilgan, Gise of Cheongan, Seongjeong of Ilgan and Amhap. They can make a use of Jijanggan to explain Saju.
There are two theories for Jijanggan. One is for Inwonyongsa and the other for Wolryulbunya. Before knowing the uses of the two theories, the contents of the two are as follows. The former indicates Jijanggan buried each Ji and Jijanggan of the year, the day and the time except the month. The latter is only used for Ji of the month and points out that the day of Saryeong in the Jijanggan for Ji of the month strongly works.
According to theories using Inwonyongsa of Jijanggan Singang and Sinyak of the day on the interpretation of Saju, which are perfectly separated, let us know the time of luck or unluck and the atmosphere of other Cheongan let us know real use or non-use between each yukchin of each Cheongan. Making use of Ganjiamhap and Jijiamhap let us know secrets of a person for Saju and Making use of Seongjeong of the day or Inwonyongsa of Jijanggan makes us predict what a person seeks for or tells or acts.
Theories using Wolryulbunya of Jijanggan are used for the theories of both Gyeokguk and Yongsin, which are the key translations for Saju. Understanding Gyeokguk let us know the size of a person who is a target of Saju and the time of Seong and Paui. In addition, understanding Yongsin let us know luck, unluck, misfortune or fortune of a person who is a target of Saju.
Jijanggan is not an independent theory used for translation of Saju but a theory used for many theories of Ming Li. Jijanggan has a huge influence on translation of Saju. Jijanggan is used as a key for many theories in order to interpret Saju. Yet Inwonyongsa and Wolryulbunya of Jijanggan have not been clearly separated since the past and then the two are sometimes confused. As a result some errors occur on the translation of Saju.
Ming Li is a practical theory and may lose its value as a theory if it does not have a perfect interpretation for Saju. Therefore, the study is expected to reduce errors on the translation of Saju, make a perfect interpretation and raise its status.