Time travel + system + prehistoric times + sign-in + multiple women
Lin Fan, the great extreme sports god, lost his footing while climbing a rock with his bare hands and fell vertically into the wild world! At the beginning, he crashed into the spirit pool of the fox tribe's holy land, and ran into the three-tailed sky fox that had just transformed and was naked! Not only is it "indecent" for the future demon clan leader, it is also tied to the stingiest sign-in system in history, and the rewards are all based on stinginess!
"Ding! Sign in to the Fox Clan Spirit Pool and you will be rewarded with the Hongmeng Dao Body! The system is pretending to be dead, and I won't give it to the host without asking!"
Lin Fan: "??? You idiot!"
From then on, Lin Fan was ostensibly a weak human being adopted by the Fox Clan, but secretly he relied on outsmarting the system, winning various heaven-defying rewards, and secretly became the supreme leader in the crisis-ridden wilderness!