I Jumped Repeatedly Between the Two Worlds of Cultivation

The cruel world of cultivating immortals: spiritual energy is about to be exhausted, and the struggle among cultivators is fierce A peaceful world of immortal cultivators: abundant spiritual energy, vast land and abundant resources, and immortal cultivators do not like to kill. Modern man Fang An can travel freely between the two worlds, what will he do? Fang An: Anyone who goes to a world where fights happen all day long is a fool. I will first go to a peaceful world to develop slowly, and then I will travel there when I have the strength and leisure time. What, that world is going to be invaded within a hundred years? Oops, I have to go back and take a look!