Can you recommend some books about time cycle and time travel?

One, Nishizawa Yasuhiko's seven deaths, the time cycle mentioned in this book is that the protagonist's own physique will lead to a cycle, and then her cycle is nine days. On the first day of the cycle, her grandfather was still alive, but from the second cycle, her grandfather was constantly killed. He had to find a way to keep his grandfather alive in the endless cycle. The setting of this book is actually quite interesting, but you may guess the truth of some mysteries when you read it, but it says that the cycle of one day has disappeared. In this case, I really didn't come up with his answer, so on the whole, the book is actually quite interesting and the reasoning is wonderful.

Second, the hourglass of time traveler, which is a work of lattice reasoning and time travel theme platform. He chose the familiar snowstorm villa model. This is a villa serial murder case, and the protagonist needs to cross to save his lover. As for the front part of this book, I have a question mark, that is, can he really win the 29th Sichuan Philosopher Award? But later I found what he wrote very interesting, because his reasoning was based on the setting of its crossing. As a design department, Mystery Fiction has a remarkable final reasoning, and the writing of these two books is quite simple, that is, you can read it as a pastime very easily.

Third, the Invisible Blade, this book is a treasure I dug up this year, er, because I think there are many mystery novel in China. Well, after reading it, I just feel a little, and even I really want to swear, but I didn't expect this author named Chen to write so well. The case of this book is initiated by a net post, whether the old man is getting worse or the bad guy is getting old. This book tells you who the murderer is from the beginning. It has become very, very wonderful, but the reason I like him is that he feels a bit like Nesper. He not only makes the whole story fascinating, but also embeds some topics that can make people think. The whole story is very complete, so I personally recommend that you pay attention to this author's works.