This paper addresses various elements that converged in the Hunminjeongeum script system and discusses their origins and characteristics. Foreign, traditional, and originally adapted elements converged in Hunminjeongeum as in a process of chemical fusion. By identifying these elements and analyzing aspects of how they work, this paper tries to explain principles central to the creation of Hunminjeongeum. This analysis of elements that merged in Hunminjeongeum and their operating principles will contribute in a major way to understand the principles behind the invention of the Hunminjeongeum script. The first section presents the definition of convergence used in this paper. In the second section, assuming that the Hunminjeongeum script system is an entity in which various elements fused, I identify and analyze individual elements and examine their implications. The third section discusses each element`s significance according to the range of its application: some elements were applied only partially in the invention of the script system, while others played a role throughout the entire process. In the fourth section, I divide all elements into three categories, "foreign," "traditional," and "original," and discuss their significance. If I may apply architectural metaphors to these elements, they can be summarized as follows. The elements of Sung Confucianism implied in Hunminjeongeum - the three basic components theory, the five elements theory, the yin and yang principle, and the way of Xiangshu (images and numbers) - correspond to the (theoretical) bases of the Hunminjeongeum script system. The trisect syllable structure and the principle of final sounds using the same consonants as initial sounds, designed after the Phags-pa script and the traditional Korean borrowed-script system, are like the pillars of the building. The five speech-organ system and the clear and thick sound system, taken from Chinese phonology, as well as the three concepts of "tongue retraction," "sound depth," and "mouth-retraction" - original adaptations of Chinese concepts for the vowels - correspond to the tools that cut the lumber and chisel the stone. The invention of ideographs imitating speech organs for the shape of initial consonants, the system of adding strokes according to the force of the sound, and the hieroglyphic design of basic characters for vowels, imitating the sky, earth, and man, are like the design principles of the building. The principle of adding strokes to the predesigned basic forms of vowels and using compounds is the most original of all the principles used in the invention of Hunminjeongeum. The combination of all the above-mentioned methods resulted in the construction of the house of Hunminjeongeum. King Sejong`s goal in building this house was to make the lives of his subjects easier. The structure of Hunminjeongeum that King Sejong built is one in which many elements from foreign and traditional scholarship as well as an originally developed methodology converged. In this study, I try to analyze the multiple dimensions in which various convergent elements operate and to understand their significance. Hunminjeongeum can be seen as a crystalloid in which various theories of foreign scholarship, a traditional borrowed-script system, and the original adaptation of pre-existing concepts converged creatively. The Hunminjeongeum script system is the result of the creative convergence of these various elements with in the brilliant mind of King Sejong.