Centenarian: Your Grandfather Is Still Your Grandfather

Reborn in the 20th century, Liu Jing faced various wars but did not have any golden fingers, but he survived until he was 100 years old. I thought I would enjoy my old age until my body failed and died, but I didn't expect that my system would be activated at the age of 100! "I'm a hundred years old, what's the point of having a system?" Liu Jing couldn't help complaining. Do you want immortality? Do you want to build rockets and cannons? It really doesn't work... Cultivate to become an immortal? Liu Jing: It smells so good... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.