It's the End of the World, Where Has the System Gone?

The end of the world has suddenly arrived and everyone is at a loss? It doesn't matter, I will take action. Survival supplies are in short supply, and survivors are killing each other? It doesn't matter, I will take action. Are childhood sweethearts in danger? It doesn't matter, I will take action. Explore the real reason for the end of the world? It doesn't matter... It doesn't matter, this is the top priority Cheng Xin has to do!