3 is representative of Fire on the I Ching Symbol, which is the basis of many of our Asian philosophies!
Although Chinese in origin the writings and Ideas from the book of changes is found in many modern martial arts! Including Korean Tae Kwon Do as well as many forms of Japanese Karate.
From Wikipedia:
The I Ching, or “Yě Jīng” (Pinyin); also called “Book of Changes” or “Classic of Changes” is one of the oldest of the Chinese classic texts. The text describes an ancient system of cosmology and philosophy that is intrinsic to ancient Chinese cultural beliefs. The cosmology centres on the ideas of the dynamic balance of opposites, the evolution of events as a process, and acceptance of the inevitability of change. In Western cultures and modern East Asia, the I Ching is sometimes regarded as a system of divination. The classic consists of a series of symbols, rules for manipulating these symbols, poems, and commentary.
