We Are in the Prehistoric Times, and We Are Bound to the Zhuxian Sword Formation at the Beginning.

Traveling through the prehistoric times and becoming Daji's biological brother, the system was repaired at the beginning! More than a hundred years later, the three demons of Xuanyuan Tomb entered the world due to the calamity. Bai Xuan's system was finally repaired and upgraded! "Ding, you have successfully carved the Immortal Killing Sword Formation!" "Ding, you killed a Daluo Jinxian, the formation strength reaches ten million, and the Zhoutian Star Dou Formation has been carved for you!" "Ding, you have successfully refined the God-killing Spear, and the array's power has reached 300 million. The Twelve Heavenly Gods' Formation has been compiled for you!" "..." From then on, Bai Xuan used his Hongmeng Formation Taoist body as the base of the formation, and with the blessing of thousands of formations, he could gain the power of the formation by killing people and grabbing treasures. One day, Bai Xuan looked at Honghuang and said to the system thoughtfully: "How much formation power can be gained by refining Honghuang?" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.