This study seeks to compare expression media between Kim Baek-bong’s Korean fan dance, a traditional dance designated as an intangible cultural asset of Korea and Kagyadifu (かぎやで風), a fan dance of Okinawa in Japan. The study examines hand motions of the two traditional dances. The author used an index of KAMAKURA as an external analytical method, while focusing on interviews and oral records to understand inherent characteristics. The ethnic identities of the expression media were identified as follows. First, fan functioned commonly by physical awareness and recognition of the body. The fans of the two countries did not directly express objects such as letters, but tried to describe the shape of the entire object as an extended part of the body. Second, the fans of Korea and Japan were differentiated as abstract technique in the process where sensual wave was reflected in the body. Ryukyu dance did not express the lyrics in a graphical or realistic way as in the case of sign language. The expression of fans was not verbal. Fans made a symbolic display of yearning that the region - the island - had toward outside world. In Korea, more than 30% of group dance figuratively reveals intention of original authors or nature. This is an indication that Korea's new art dance was affected by modern dance of the modern times. Third, fans had multidimensional contexts in showing internal feelings. Korean dance depicts nature or intention of authors, and express inner feelings through various rhythms. Ryukyu dance expresses relations between a fan and a dancer abstractly by containing a joyful feeling of the performer, rather than venting the feelings. The comparison of intangible cultural properties of both countries could reveal that they harnessed the same expression media but showed difference in their unique national emotion.