Help, I'm Lost in the Multiverse!

Introduction: [Science fiction, infinite, no system, group portrait, Cthulhu, first person] Demining trailer: non-traditional unlimited streaming. My name is Ming Yuan, a university intern majoring in preschool education. There was a power outage on the subway on the way to get off work, and it was blown up by a nuclear bomb. When I finally recovered, I was in a place I didn't recognize. Later I discovered that any door I opened with my own hands could lead to other worlds. Some people in the world want to devour me as soon as they meet; some people find me and want to destroy me at all costs; some people understand me but choose to build with me. But I just want to go home and return to that familiar world. Maybe it would be nice to have her accompany you on your wandering journey? [Appendix: The protagonist has a special setting, but it follows a logical explanation. Any foreshadowing that appears will be taken back later. Please support newcomers writing books!