Compiled by Yu Chuntai (余春台) during the Qing dynasty, Qióng Tōng Bǎo Jiàn (穷通宝鉴) is one of the most prominent literary texts in the study of Bazi. The text puts forth the notion of fate adjustment, theorises the importance of the relationship between Daymasters and Month Commanders, and summarises them in the context of the Five Elements. Its main theories highlight the basic natures of the Five Elements, their elemental interactions, and various considerations. This work is essential for understanding the dynamics of Bazi and the influence of elemental relationships on an individual’s fate and character.