Has anyone in this world ever returned to the past?

I don't think so. The volume and variety of Marvel comics make it highly unlikely that anyone could have read them all. It's an almost impossible feat.

Han Li returned home. In Chapter 1391 of the novel "Mortal Cultivation Biography,""Going Home," Han Li returned to the Drifting Cloud Sect in the Scattered Star Seas before ascending to the Immortal World. He visited his Master Li Huayuan, Senior Martial Sister Xin Ruyin, and a group of juniors before leaving. While waiting for the TV series, he could also click on the link below to read the classic original work of " The Legend of Mortal Cultivation "!

Han Li didn't return home. In the novel "Mortal Cultivation Legend", after Han Li entered the Immortal World, he received news about his hometown in the Candle Dragon Dao. However, because he was facing a life and death crisis at that time, he didn't return. After that, although he returned to the Spiritual Realm many times, he never returned to his hometown. It wasn't until Han Li became a True Immortal and an Immortal Official of the Heavenly Court that he found his cave abode in the human world in a small world in the Immortal World. There, he discovered the information left behind by a wisp of his soul in the human world. However, because he was busy dealing with the war between the Heavenly Court and the Demon Territory at that time, he did not return. It wasn't until Han Li became an Immortal Emperor that he finally returned to his hometown and met his family and friends. While waiting for the TV series, he could also click on the link below to read the classic original work of " The Legend of Mortal Cultivation "!

Han Li returned home. In Chapter 1111 of the novel "Mortal Cultivation Legend", Han Li returned to Yellow Maple Valley's Immortal's Cave and went into seclusion to cultivate for a period of time. While waiting for the TV series, he could also click on the link below to read the classic original work of " The Legend of Mortal Cultivation "!

In the novel "Mortal Cultivation Legend", Han Li finally returned to his hometown Yellow Maple Valley. At the end of the novel, Han Li became a Celestial Venerable in the Immortal World. He used great magic power to move his hometown, the Mini South Continent, from the Spirit Realm to the Immortal World, where he reunited with his family and friends. While waiting for the TV series, he could also click on the link below to read the classic original work of " The Legend of Mortal Cultivation "!

In the "Mortal Cultivation Biography", Han Li finally returned to his hometown Yellow Maple Valley. However, he didn't return home and instead used a teleportation formation to go elsewhere. While waiting for the TV series, he could also click on the link below to read the classic original work of " The Legend of Mortal Cultivation "!

I'm just someone who likes reading novels. I don't have the ability to directly check whether people have read a particular book. But I can tell you some information about the book. If you have any specific questions about it, I'll try my best to answer them. The name of the book was " Battle Through the Heavens ". It was a fantasy novel written by Tian Can Tu Dou. It told the story of a young man's growth. In the process of pursuing power, he experienced various challenges and battles. This book was very popular among online novels and had many readers.

At present, there was no evidence to prove the existence of people who had traveled to ancient times or the future. Imagination of traveling to ancient times or the future often appears in literature, movies, and anime, but these imaginations are usually based on fictional stories or theories. In science, time and space are related. The theory of relativity in modern physics shows that the passage of time is related to the position of objects. Therefore, if a person traveled to the future, his or her time would pass much slower than the modern time, which would cause him or her to be unable to adapt to the modern environment and life. Similarly, if a person traveled back in time, his or her time would pass much faster than in the modern world, which would cause him or her to be unable to adapt to the ancient environment and life. Although some people have proposed the idea of traveling to the future, these imaginations are usually based on fictional stories or theories. There is currently no scientific evidence to prove that there are people who travel to the future.

Yes, a great many people have published fan fiction. There are numerous fan fiction platforms like Archive of Our Own (AO3) and FanFiction.net where writers can share their works. Fan fiction ranges from stories based on popular book series like 'Harry Potter' to TV shows such as 'Star Trek' and movies like 'Star Wars'. Writers are often inspired by the existing fictional universes and create their own stories, sometimes exploring different plotlines, relationships between characters that the original might not have delved into.

Occasionally, Batman has been depicted as killing someone in certain comic storylines. However, this goes against his usual code of not taking a life and is usually a plot point that has significant consequences and character development.