Reality Online. After the protagonist appeared in a colorful comet named Fancy, he obtained special abilities and heaven-defying skills. After transmigrating to another world, he collected equipment and killed monsters to drop equipment. Finally, he returned to Earth and found that many changes had taken place on Earth, including modern weapons.
The protagonist of this book is an Earth mercenary who unfortunately sacrificed himself during a mission. Then, he woke up and found himself in a different world, but he did not give up hope of returning to Earth. Through his own efforts and wisdom, he gradually promoted the development of science and technology in the Otherworld and finally successfully developed a way to return to Earth. I hope you like this fairy's recommendation. Muah ~π
This question was rather vague because the specific background of the protagonist's 8000 years of cultivation was not clear. However, if it was referring to the protagonist's 8000 years of cultivation after transmigrating to another world and then returning to Earth, then the name of this novel would be "The Evil Prince of Another World." This was a very popular online novel. It told the story of a young man, Zhang Chu, who had transmigrated to another world and became a powerful ruler through cultivation and combat. After returning to Earth, he embarked on a new journey and fought fiercely with his companions on Earth.
The following two novels met the requirements: 1. In "Super Miracle," the protagonist Lu Hang returned to the days before the miracle descended on Earth after his death. He wanted to tell the higher-ups of the country the importance of the miracle, but he found that it was not easy. 2. In "I Have a Wormhole that Connects to Earth," the protagonist, Sota, obtained a space-time wormhole that connected to Earth. He began a magnificent story in another world, with Earth as his back. I hope you like this fairy's recommendation. Muah ~π
I recommend "Return to the Past Life to Counterattack" to you. This sci-fi space-time travel novel tells the story of the protagonist, Yunshang, returning to her previous life and reincarnating. She repays her grudges, repays her grudges, and repays her kindness. In the end, she ascends through the divine lightning that cuts karma. I hope you like this fairy's recommendation. Muah ~π
I recommend "Earth's First Overlord" to you. It's a novel about a game and a game in another world. It tells the story of the main character, Chen Liangyu, who traveled to another world due to a mysterious stone. He later returned to Earth and finally unified Earth and the other world. I hope you like my recommendation. Muah ~
I recommend the novel "Infinite Guardians of the Earth" to you. The main character returns to Earth to fight against aliens after transmigrating. This book is also called "Kill the Alien" and "Earth is My Territory." I believe you will definitely like it. I hope you like my recommendation. Muah ~
I recommend the book,"Revival of Spirit Qi, Return to Earth as the Richest Man". This book told the story of Jiang Feng returning to Earth after a hundred years of cultivation and discovering that the Earth had already recovered its spirit qi. The protagonist started his life anew on Earth and became the richest man on Earth with the help of his cultivation and the system. The plot matched the description. There was indeed a plot where the protagonist traveled from Earth to another world and returned to Earth. I hope you like this fairy's recommendation. Muah ~π
I recommend the novel "The Time Thief of Another World." The main character was a thief who controlled time. He traveled to a different world and started a series of exciting treasure stealing adventures. After experiencing a series of shocking events, the protagonist finally returned to Earth and continued his thief operation. This was a fantasy novel about a different continent, and it was very intriguing. I hope you like this fairy's recommendation. Muah ~π
Return of the Immortal World.