Asking for the name of a fantasy novel

The one I read in the past was an unfinished one. Later, I read other novels and forgot the name of this novel. Please tell me if you know.
It was written in another world. The main character's name was something like a dragon. His grandfather was a general of an empire. Their enemy country picked up a book written by cultivators. However, the country couldn't understand the words in the book. However, they still managed to research a little. They managed to make a puppet to be used as a mount, the kind that could still be used after death. When the protagonist's grandfather went to the capital, someone from the enemy country came to stop him. However, he was not killed and accidentally dropped a copy of the book. His grandfather happened to pick it up. When he took it back, the protagonist saw that it was the words of his hometown and began to cultivate. The book also wrote that a cultivator accidentally came to a different world and returned. He died in a large array. There were many things left behind by the fated people of his hometown.
I've only read so much. I wonder if anyone can tell me which book is finished?
If it's the book I want, I'll give it to you again
Another point was that this book was not like most novels in the other world, which wrote about how to go to the other world in the original world. The book started off with him practicing his swordsmanship at home in the other world. Later on, when he recalled, he said how he came to this world. It seemed that a lightning bolt came out of an internet cafe and struck him to death. That was how he came to the other world.

Answer 1

I'm sorry, I'm not a novelist, but a reader of novels. I don't have the ability to know the name of any novel. But if you have any specific questions about the novel, I will try my best to answer them.