Nine Lives and One Death

A year ago, my grandfather disappeared mysteriously. A year later, the fourth grandfather's whereabouts were unknown again. We followed the few clues and entered one wonderful world after another: the strange Tang tomb that went 20 meters underground; the thousand-year-old temple buried underground; the red world that shrouded the entire city in our eyes; the pyramids in the primitive mountains of Africa; the twisted space under the sea of ​​hundreds of tombs; the ancient vicious tomb that my grandfather and his team visited fifty years ago... How could the truth be like this? What is all this about? I am also confused at the moment!