Prehistoric: After Hundreds of Reincarnations, the World Collapsed?

Traveling through the prehistoric times, the system asked Li Yuan to randomly reincarnate for a hundred lives. After completing a hundred tasks, he could become the Hongmeng Demon God, a fellow practitioner of the Three Thousand Dao, and realize the supremacy of the Dao. The first life: Become Yi and fight for the Wu clan. Second life: Help Nuwa establish a human religion and seize my luck. The third life: Accept Jiang Ziya as a disciple and help him become an immortal. The fourth life:...... The ninety-ninth mission is to intercept Hu Su Daji and revitalize the Su family in Jizhou. Finally! Li Yuan ushered in his 100th reincarnation. Mission: Defeat Hongjun and control the way of heaven! But Li Yuan suddenly realized... Something wasn't right. Wasn't the previous mission carried out in a parallel world? There were some characters who appeared at the same time in previous reincarnations, and I didn't even recognize them at that time. Why are everyone's memories in this life... All awakened! ? So.... "After a hundred reincarnations, I won't destroy the ancient world, right?" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.