Ch’oe Sŭng-hŭi came to study drama in order to create the form of Muyong gŭk after she had watched some productions of Western ballet theatre during her tour on Europe and America. Ch’oe Sŭng-hŭi's Muyong gŭk was a new genre in which the traditional elements of traditional Korean dance and the form of Western drama were combined. Calling this genre "Korean Ballet," Ch’oe Sŭng-hŭi developed her own theory to make it. Ch’oe Sŭng-hŭi's theory of making Muyong gŭk suggests that she had deep knowledge of drama and melodramatic playwrighting skill on a professional level. Ch’oe Sŭng-hŭi called her libretto for Muyong gŭk "muyong gŭk wŏnbon." Her muyong gŭk wŏnbon had the qualities of a new and unique form of literature as well as the practical function of serving a production. Ch’oe Sŭng-hŭi realized her Muyong gŭk based on muyong gŭk wŏnbon in which traditional movement and posture expressed through the form of drama. Ch’oe Sŭng-hŭi's theory of making Muyong gŭk showed both merit and demerit. While it created a new genre in national arts, it had to reflect the socialist ideology in its choreography and sticking to melodramatic plot and characters. Ch’oe Sŭng-hŭi's Muyong gŭk shows that she was a well-rounded artist who had a wide range of knowledge about various fields of performing arts. Getting the Korean people understand that dance was a form of modern arts was Ch’oe Sŭnghŭi's achievement as the first Korean engaged in modern dance. Creating Muyong gŭk was another historic accomplishment by Ch’oe Sŭng-hŭi.