"Yes, that is the magical uniqueness of the Invincible Fighting Method. For centuries, it had disappeared since the era of the Holy Emperor. Many supremes even thought that the Invincible Fighting Method had been lost with the Holy Emperor. As time went by, that method became a legend and there are many stories about it, such as the jade wall with the Heaven Book, the Yin and Yang River, and the Underground Crystal Dragon Palace..." the ancestor said with a lowering voice, "Many people ...