Civilized Self-Rescue Guide

I was once a walker walking on a crystal white dwarf; I was the planet devourer who changed the trajectory of a wandering black hole; I was a lone explorer witnessing the birth of a supernova; I was the engineer of the galaxy that drove trillions of stars to spin; I was the savior who detonated neutron stars; I was... These epic past events are all traces left by Fang Yi in this universe. An ordinary person, with traces of self-rescue starting from the earth's civilization.