You are not simply traveling through time. The name "Li Shuo" on that Han slip was vague before you came. With your great achievements in battle, a nursery rhyme began to spread in Chang'an city: "The golden scales are hidden in the new moon, you are neither a Han nor a foreigner." Someone wants to check your background. The slip you saw in the museum actually had a line of small cinnabar characters invisible to the naked eye on the back. It was only after you traveled through time that you saw the same handwriting on the back of a trophy bronze mirror: "The return date is Jiazi, the secret must not be revealed." - Who wrote it? Why can you wear it? Is this "return date" a literal meaning, or is it a call from another fate?
