Nothing is impossible in the world.
The mobility of space determines the law of development of things. The stacking of time, unexpected factors and various scientific resets of human control have caused the collision of two organisms that were originally impossible to have a connection, resulting in parallel motion. Therefore, there is never a occurrence of 0 in probability. Strictly speaking, it can only approach infinitely. Or use professional vocabulary to describe this chain reaction as the "butterfly effect."
Of course, for us ordinary people, we use a romantic slogan to acknowledge its existence, that is "fate"...
It was on that mythical night that Fang Siling learned the truth.