In my book, i came across the association of five elements & their mutual relationships of qi energy flow. Its design symbolizes the principles of yin and yang in the kimchi oriental philosophy. The two forces together embody the concepts of continual movement and balance and harmony that characterize the sphere of infinity. The circle is surrounded by four trigrams in each corner. Each trigram symbolizes one of the five universal elements : Heaven, Earth, Fire, Water, Metal. Followed by the Five taste, season, color and direction.