Signing in for Sixty Years: I Became Emperor Wu of the Great Zhou Dynasty

In this exaggerated era where rebirth and time travel have become a trend, Li Siyuan woke up and found that he was not immune and joined the army of time travel. Others who travel through time are the Young Master, the Prince, and the Holy Son. And he... Actually traveled through time and became a eunuch. Don't be afraid, the system is coming! With the system in hand, I own the world! He grew up in a low-key manner, signed in the library for sixty years, and accidentally became Emperor Wu of the Great Zhou Dynasty!