I love mythology and always believe there is some truth behind all mythology stories. So the story goes that in Chinese mythology, Chinese god Fu Xi was one of three noble emperors during the San-huang. The time period he ruled was from 2952 to 2836 B.C. (116 years). It is told that he taught people to use fishing nets, to breed silk worms, how to tame wild animals and music. He was known for teaching the eight Trigrams (BaGua), the template for Feng Shui.
He created the eight trigrams to show order in the world according to eight principles. The eight principles were Sky, Earth, Thunder, Mountain, Water, Fire, Marsh and Wind. Fu xi knew how important the natural world. The sky tells the weather. The ground shows the food to eat. He wanted to help people record the wonderful things of the world. He created the eight trigrams (ba gua).
The legend of the Luo Shu magic square was created while Fuxi watched the Luo Shu turtle emerge from the river Luo. It was said during the reign of EmperorYu, a great flood happened in China. The people made sacrifices back than to appease the river God Luo but nothing was working. The people implored god Fuxi. God Fuxi was watching the Luo Shu turtle coming out of the river every time a sacrifice was made.
Fu Xi noticed the strange pattern on the turtle’s back and realized it was a 3 x 3 grid pattern with dots in the center of the squares. The sum of the number of dots in each row added to 15. Fuxi let the Emperor learn that the number of offerings had to be 15. The people made 15 sacrifices appeasing the river god and making it happy and peaceful again