Lin Yuan, the administrator of the modern historical archives, opened his eyes and transformed into a clerk copying papers in the Tang Gongyuan.
Even though he has no power or influence, he is still a transparent person.
Fortunately, he activated the [Tian Heng System] - he can see anyone's merits and demerits and fate line. He originally wanted to keep a low profile to save his life, but unexpectedly discovered that a young eunuch who delivered tea would usurp the throne thirty years later and wipe out the Tang Dynasty.
Lin Yuan decided to take action.
But he soon discovered that the iron law of the system reads: every time you change history, you have to pay a price.
He saved a poor student, and a locust plague broke out in Luoyang. He trained a loyal minister and a good general, and war broke out on the border. Every time he "changes his life against the will of heaven", he consumes his lifespan.
But the little eunuch's luck was getting better day by day.
The thirty-year countdown has begun.
This is a story about a petty official who uses the examination room as his battlefield and the test questions as his sword, fighting against destiny under the watchful eye of Wu Zetian.
Those who change their fate will suffer backlash. But he had no choice.