I Rely on Deception to Save the World of Immortality

Xiao Su, who was originally in his prime, was unexpectedly reborn as an old horse breeder. He only had a few years left in his life, so he accepted his fate, thinking that it would be good to live his life like this, until one day he realized that horses are not horses, and people are not humans... Grandma, please play with me. Hang up! Wasn't it me? Help me. It wasn't until a mysterious ancient book fell from the sky that Xiao Su's fate gradually changed.