Am I Mentally Ill? It's Not Too Much to Think of Mental Illness as a God, Right?

My name is Shen Nuo, and I am an orphan. I have known since I was a child that I am not simple. I awakened my spatial powers after a car accident when I was five years old. You can open a ten-square-meter portable space, but it can only store any inanimate items. My classmates always thought I was mentally ill because they often saw me making movements in the air, so they stayed away from me. Until I was eighteen years old, I couldn't help but tell my girlfriend the secret of space, but she was sent to a mental hospital. During the year I was in the mental hospital, I had nightmares every day. In the dream, the end of the world is coming, extreme cold has fallen, and the world has become a ruin carved by ice. The global population has declined significantly. The cold wave subsided, the whole world became paralyzed, and unknown viruses began to break out. The surviving humans and creatures began to undergo extreme mutations, and the dead humans and creatures all came back to life and turned into zombies. In the dream, I killed a primary mutant. After swallowing the mutated crystal core, he also awakened his spatial powers. At that moment, the me in the doomsday and the real me, my soul and space were connected. The items that the real me puts into the space can be taken out by the doomsday me to provide him with survival supplies. In the doomsday, I can use crystal cores and doomsday resources to upgrade the space. Realistic me: My goal is to make a fortune! Me at the end of the world: My goal is to survive.