WARNING: There may or may not be a small scene filled with sexual content during the chapter.
After thinking about it seriously for a while, in the end, Shun Long could only come to the conclusion, that this had something to do with the Golden book.
After all, ever since he had absorbed the knowledge inside the Golden Book, the book had merged with his soul, becoming one with him.
Shun Long didn't know if there would be any changes when he broke through to the Nascent soul stage, but he could only speculate that his spirit sense was now like this thanks to the golden book.
Additionally, his soul had also been forcefully expanded while he was still in the Qi condensation stage, so it wasn't unnatural to assume that this had something to do with the golden book as well.
After he sorted out his thoughts, Shun Long took a deep breath, before he closed his eyes and imagined himself leaving the foggy place in the 'Stone of Time'.