You Dig My Grave and Call Me a Tomb Robber?

While the archaeological team was excavating the ruins of the Huaxia Academy of Metaphysics, they discovered a young corpse that looked to be in his twenties. In order to determine whether he was a tomb robber and to see if he had any accomplices, his superiors used a memory extractor on him. When his memory was exposed, everyone was stunned. Weird caves, man-eating tree monsters, death bugs, unknown higher life forms under Antarctica? A different world was revealed to them. Only then did they discover that the owner of this corpse had died due to his ascension into the courtyard? Are there really cultivators in this world?