According to ancient Chinese legend, the numbers of the Lo Shu square were on the shell of a huge turtle that appeared from the river Lo. One wise man noticed the turtle and memorized the numbers on its shell.
The original square was first mentioned thousands of years ago; however, its original schemes were lost, and no specific descriptions are available either. Even Confucius had not seen the original schemes.
In its modern form, LoShu was published in the Chinese treatise in around 1200 AD. Since ancient times, Lo Shu was regarded as a nonary scheme which