To unravel the concept of "time zero" in quantum theory,
humanity used quantum collisions to develop the first "conditional" time machine.
Its creator, "Heizi," was sent to the Tang Dynasty several times during experiments with the machine, each time by accidentally meeting its conditions.
A so-called "conditional time machine" is a finicky machine that only allows travel when specific conditions are met.
According to the "butterfly effect," people from the present who travel into the past indiscriminately could cause civilization to disappear and humanity to be destroyed.
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This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.
Traveling into the past will not change the present!