I Received a Scam Call from 10,000 Years Ago

Cheng Jun received a phone call from 10,000 years ago. At first, I thought it was a scam call. But with deeper understanding, things become less and less simple. The person who called was actually from the Tang Dynasty. In the fifth year of Zhenguan, he fell into the prehistoric world due to an earthquake and met scientists from 2|0|3|3. The disappearance of the Tang people triggered a butterfly effect, and people in later generations began to disappear. Cheng Jun, whose memory was not affected, realized this and worried that he would disappear because of it. So I prepared necessities overnight and planned to enter the prehistoric world where giant beasts were rampant to save my life... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.