Kaiyuan of the Last Days

In a post-apocalyptic world, cities are in ruins and people's minds are even more unpredictable. It seems that the cause of the great annihilation is no longer known. Although the protagonist Ji Yuchen seems to know the reason in his memory, he is vaguely unclear. One day, Ji Yuchen was lucky enough to enter a mysterious secret realm. This secret realm was said to be an ancient and mysterious place that survived the apocalypse. He discovered that this secret realm contained both modern technology and ancient mysterious powers, as well as some unexplainable alien creatures living in the secret realm. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.