The protagonists are two brothers and sisters, one an antique shop owner and the other a researcher at the Institute of Archeology. Just because the two of them teased netizens about which one they would choose if they traveled through ancient Chinese dynasties online. They accidentally traveled through time and obtained dual systems to travel back and forth between ancient times and modern times. Everything changed. One pretended to be an immortal, the other pretended to be a god, and finally chose the early Tang Dynasty. The trend of the Tang Dynasty changed.
It looks really painful to death