Seeing the expression on Iwazaki Hideyoshi's face, Hanzang didn't mind and simply asked.
"Do you know where these books come from?"
These are all ancient books recorded in Huaxia's mysterious literature, but they have long been lost, and there is no consensus on whether they are just myths and legends.
Although Iwazaki Hideyoshi had heard of them, he was not clear about their detailed origins, showing a hint of embarrassment.
Iwazaki Hanzang did not mind either and explained slowly with an old and vicissitudinous voice.
"In ancient Huaxia, Fu Xi developed the Yi Jing based on the 'River Map,' and Yu governed the Nine Provinces with the help of the 'Luo Shu.'
By the Western Zhou, the founding hero Jiang Ziya obtained the miraculous 'Taigong Yin Symbol,' which was said to contain the art of military formations. With it, he helped Zhou overthrow the tyrant Zhou.