The flag of South Korea is also known as the Taegeukgi flag. It features a white background with a red and blue yin-yang symbol, called the Taeguk, in the center. The red section represents positive cosmic forces, while the blue section represents negative cosmic forces. The four black trigrams, one in each corner, represent the four elements and derive from the I Ching, an ancient Chinese text on divination. The upper left trigram represents heaven. The upper right trigram represents water, while the lower left trigram represents earth, and the lower right trigram represents fire. The flag symbolizes the balance and harmony of opposing forces overall.