Dating Simulator? No, It's the Prehistoric Strategy Manual

The marriage was shattered, the heavenly secrets were in chaos, and the three prehistoric female fairies fell into the mortal world. Su Qinghan, the last genius swordsman in the Jie sect, lost all his masters in the old tribulation of Fengshen, leaving only one sword to guard his heart. Feng Jiuge, the last emperor of the Feng clan, is about to extinguish the immortal volcano, and is responsible for the rejuvenation of the clan. Yun Suyi, the last saint of Yaochi, has been cut off from the Taoist lineage, and only a little bit of clarity remains in the pure lotus heart. They came to this apocalyptic world called "Earth" and met a mortal boy with merit. The young man said that there are "laws" in this world and you are not allowed to kill people at will. The young man said that there are "policemen" in this area, and they must compensate for damage to property. The young man said that there is "technology" in this world, and although there is no aura, there is an alternative civilization. They scoffed until they were forced to learn to use flush toilets, smartphones, and online payments... Until the shadow of the Council of Gods enveloped this world, until old friends from the ancient times were summoned, and until the young man faced the power of the saint to protect them. Only then did they realize: this young man was what they were looking for across time and space - to escape the secret.