Become a Moving Castle from the Weird Apocalypse

Zhou Yuan traveled to a strange and fantasy world. In this world, after the gray fog fell, countless gray disasters ravaged the world. Good news, he has a golden finger and can be upgraded infinitely. Bad news, it's a castle. Strictly speaking, it's just a crumbling refugee house for the time being. Arrow towers, forts, and buildings built to resist the gray mist rose from the ground. Chen An became the savior and shelter for the civilians in the gray mist world. Until—— The "ultimate natural disaster" has come, and countless crazy disasters have harmed the world, and people are in dire straits. A moving castle that covers the sky and the sun is coming at a fast speed! "Mom, look, it's Transformers." Zhou Yuan smiled, "I still prefer others to call me Zhou Yuan's moving castle." ... Many years later, Zhou Yuan looked down at the "monster" he had cultivated. "I remember you weren't like this when you first moved in. You said you just had to eat and live. Now you say you want to help me rule the world?" "What a god, don't call me that."