I Go to the Future to Read Stories

When Lin Ran woke up, he found that his soul had traveled five hundred years into the future, along with his fiancé, his niece's Flower of the High Mountain, and an unorthodox and active Immortal Lord. Lin Ran, who was on a mission to save the future, arrived at the so-called future, only to find that everything had become incredible. Shi Ming, who was sealed hundreds of years ago, made a comeback and his whereabouts are unknown? You and your fiancé have already died? ! The little niece became a big devil who killed her father and brother and did many evil things and was killed? Why does my cousin look so different? Conspiracies, misunderstandings, worldly affairs, and human relationships, after all are broken and returned to the present world, how can a few people change the future? (In fact, it is a story where you first experience what happens in the future as a bystander, and then return to the present world to change the future. (The scumbag author wants to write both sweet and sad stories)