Ancestors of Prehistoric Times, Shouyang Signed for Trillions of Years!

Traveling through the prehistoric world, Li Changkong became the least talented person among the innate humans, and was persuaded by a group of innate humans to stay in Shouyang Mountain to practice. I thought I would live a miserable life. Unexpectedly, the 'god-level sign-in system' was awakened! Sign in anywhere and get rewards! "Ding dong, congratulations to the host Shouyang Mountain for successfully signing in, your training talent will be multiplied by 1000 times!" "Ding dong, congratulations to the host Shouyang Mountain for successfully signing in and obtaining the 'Eight-Nine Mysterious Skill' and 'Tiangang Earthly Evil Skill'." "Congratulations to the host for successfully signing in and obtaining the 'Quasi Saint Dojo'..." "..." In this way, Li Changkong signed a trillion years in Shouyang Mountain. One day, the demon tribe massacred the human race and used their blood to refine the witch-slaying sword! The human race is unstoppable! Li Changkong had no choice but to take action... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.