Which novels could allow people to travel through time and space and return to reality safely?

For example, in the book by the Supreme Scoundrel, there was a passage in which one could go back to seven years ago through a time tunnel and then return to the present. Anyway, it was a novel that could travel between two time and space. The male lead and the female lead should stay away.
It's just like Stephen Chou's Gambling Hero II: The Gambling Saint on the Beach returns from modern times to Shanghai in the 1930's

Answer 1

I recommend the two novels,"What's Wrong?" and "The Mysterious Revival of the Strange Pocket Watch", to you. "What's Wrong?" told the story of the female protagonist returning to the past to experience youth and create a perfect life, while "The Mysterious Recovery of the Strange Pocket Watch" told the story of the male protagonist returning to the past and changing history with the help of the pocket watch. I hope you like this fairy's recommendation. Muah ~😗