A strange box was unearthed in the suburbs of Chengdu, Sichuan. It is a box with extremely rare raw materials and exquisite workmanship that exceeds the most advanced level of the contemporary era. Through radioactive element testing, it was found that it had indeed existed for nearly two thousand years, but the paper inside was intact. What's even more strange is that the text on the paper is in simplified Chinese. It records a period of history from the Three Kingdoms era that cannot be found in any history books. In fact, there is nothing surprising, because the answer to everything can be found in those words...
"I don't know when you unearthed my box, at least it wasn't 2007. I just received my college diploma that year, and not long after that I magically came to the Three Kingdoms era at the end of Han Dynasty. If you want to tell me how I came here, you may not believe it, because I don't know if you have discovered aliens. They were the ones who brought me here. As for how I met the aliens and how they brought me here, I don't want to say it, and I can't explain it clearly, and it's not important. When I left, I asked them for this box, which can store objects permanently; they said that the internal structure of this box will self-destruct after it is unsealed, so you don't have to waste your efforts studying its structure.
It's time to tell my story, starting from the first moment I came to the Three Kingdoms..."