Borrowing the Past to Create the Present

After traveling through time, the protagonist Lin Che discovers that the "ancient world" she lives in hides a surprising secret - it is a collapsing "high-dimensional game sandbox." What he brought not only modern knowledge, but also a "curious object exchange system" that can connect the two worlds, but every time he uses it, it accelerates the collapse of this world. He must make the ultimate choice between saving and using.