Ulsan City, South Korea
The South Korean flag was adopted on March 6, 1883. The flag contains a white field with a red and blue taegeuk (“yin-yang”). On each of the corners of the flag there are four black trigrams. The white on the flag represent the “cleanliness of the people”. The taegeuk symbolizes everything in the universe with the “Yin” (the negative) is blue and the “yang” (positive) with both in perfect balance. The four trigrams stand for the four Chinese philosophical ideas in regards to the universe of harmony, symmetry, balance and circulation.