The book he turned to was Fang Jingxuan's notes.

"December, sunny. I feel a little unwell today. I know my time is coming. It's a pity that I can't explore the wider universe. I can only hope that future generations can discover this unsolved mystery."

"January 5th, Xiaoyu, I found it! After ten years, I finally found the secret of the meteorite!"

The slightly sloppy handwriting showed the owner's excitement. Yu Chen turned to the next page and saw a document on it. He had ...