Escape from the Earth and Cultivate Immortality

"Accidentally" came to a parallel world with the same history as ours. He physically traveled but brought his own identity document, so our protagonist Ning Tao always believed that he had a golden finger, either the system or his grandfather. Ning Tao, who had been waiting for eight years, finally got the system he wanted. He yelled at the system in his heart, "Do you know how I have spent these eight years?" Unexpectedly, the first main task released by the system was to teach all mankind to cultivate immortality and avoid the disaster of the earth. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.