Zhang Yi watched the icy winds howl outside his window, shaking the bare trees until they groaned. He was safe and warm inside his fortress, protected from the icy apocalypse that had claimed the rest of the world. He had everything he needed here, food, shelter, and most importantly, peace.

It wasn't always like this. In his past life, Zhang Yi had been a kind man, always helping others without expecting anything in return. But his kindness had been his downfall. He had been betrayed and killed by the very people he had helped.

Reborn with a new power to manipulate space, he had prepared for the coming Ice Age. He had summoned a fortress, filled it with supplies, and made sure he was the only one who could enter. He was ready for the world to end.

The world outside was freezing, people were dying, and chaos reigned. But inside his fortress, Zhang Yi lived comfortably, enjoying luxuries that most people could only dream of in this new Ice Age.

One day, a voice called out from outside his fortress. It was a woman, begging him to let her in. She promised to be his girlfriend if he would just let her inside. Zhang Yi just laughed.

A rich second-generation guy came knocking next, offering all his money in exchange for a single meal. Zhang Yi just shook his head. He didn't need their money, and he didn't need them.

His neighbors, now turned into beasts due to the harsh conditions, also came to his door, demanding he share his supplies. Zhang Yi declined, reminding them of how they had betrayed him in his past life.

As days turned into weeks, and weeks into months, Zhang Yi continued to live comfortably in his fortress. He watched the world freeze over, and he was glad he had chosen to be selfish this time.

But as time went on, Zhang Yi began to feel lonely. He had everything he needed, but he had no one to share it with. He started to question if his selfishness was the right choice.

One day, a little girl came to his door. She didn't beg or plead. She just stood there, shivering in the cold, her eyes filled with fear and hope. Something in Zhang Yi's heart stirred.

He watched as she tried to make a fire with trembling hands, her small body shaking from the cold. She didn't cry or complain. She just tried to survive. And Zhang Yi found himself admiring her spirit.

He let her in. He gave her food, a warm bed, and a place to call home. He found himself laughing at her jokes, listening to her stories, and teaching her how to survive. He was no longer alone.

Others came, attracted by the light and warmth of his fortress. He let them in too. He was no longer the selfish man who had shut the world out. He was a leader, a teacher, and a friend.

Zhang Yi realized that he had been wrong. His fortress wasn't just a place to survive, it was a place to live. And living meant more than just having food and shelter. It meant having people to share it with.

As the icy winds continued to howl outside, Zhang Yi no longer watched them alone. He had a family now, a community that he had built. And he was happy.

The world was still freezing, people were still dying, and chaos still reigned. But inside his fortress, there was warmth, laughter, and love. It was a beacon of hope in a world consumed by ice.

Zhang Yi had learned a valuable lesson. He had learned that no man is an island, that we all need each other to survive. He had learned that kindness wasn't a weakness, but a strength.

He had learned that in the face of adversity, people could show incredible strength and resilience. He had learned that even in the darkest times, there was always a light at the end of the tunnel.

He had learned that even in a world covered in ice, there was still warmth to be found. And that warmth came from the hearts of the people around him.

Zhang Yi, once a man who had chosen to isolate himself from the world, had become a beacon of hope. He had become a symbol of resilience and strength in a world that needed it the most.

And as he looked around at his family, his community, he felt a warmth that had nothing to do with the temperature outside. He felt a warmth that came from love, friendship, and a shared struggle. He was home.

In the end, Zhang Yi didn't just survive the Ice Age, he thrived. He created a community, a family, and a legacy that would outlive him. And he did it not by being selfish, but by opening his heart to those in need.

So, while the world outside continued to freeze, Zhang Yi's world was filled with warmth. And as he looked out at the icy landscape, he couldn't help but smile. After all, he had finally found his place in this icy world.

Zhang Yi had turned his fortress from a place of isolation into a sanctuary of warmth and hope. He had turned his life around, and in doing so, he had also managed to change the lives of those around him.

And so, even in the face of an icy apocalypse, Zhang Yi found warmth. He found family. He found home. And he found a purpose that was greater than just survival. He found life.