User blog comment:The green taz/The book/@comment-4902527-20130714065915

For the record those three-bar symbols on the Korean flag are trigrams from the I Ching: a sort of ancient Asian system of divination. The one that looks like Lee's tattoo is called Li and it represents fire. It's worth noting that the tattoo symbol in the book doesn't look like Li, so whether it's actually the I Ching is debatable.