From ordinary to invincible legendary life

In a world that couldn't be more ordinary, there is an ordinary young man named Lin Yu. Lin Yu originally lived an ordinary life, but accidentally started a mysterious system journey. Sometimes he traveled to ancient times, relying on modern knowledge and the help of the system, he was able to move freely between the court and the world; sometimes he broke into a mysterious other world and fought fierce battles with various fantasy creatures. However, all this is not accidental. As Lin Yu continued to explore, he found that he seemed to be involved in a huge conspiracy that spanned time and space. Every time he traveled, every challenge was full of suspense and reversal. Can he unravel this mysterious conspiracy...