Sorry, I'm the Old Sixth

I listened to chapter 20 before turning back to read the text. It turns out it's a time-travel historical fiction with a large cast of characters, including many real figures from the Three Kingdoms period—it's a bit like *The Longest Day in Chang'an*! PS: I didn't read the first few chapters carefully; they're probably just background information about the time travel, right? Hopefully, the later chapters will clarify the real reason for the time travel!