In the 1960s, as one of the first geological surveyors of New China, we were secretly selected to join a certain geological engineering team.

With a confidential order, we set out without knowing the purpose, the location, or the reason, arriving at a primitive border jungle whose location could not be confirmed. After enduring anxiety and even facing what we thought was certain death, we watched a top-secret "Film Zero" intended only for the highest central authorities. The images on the screen were suffocating—the information returned by seismic waves, restored on film, clearly showed that embedded in the earth’s crust 1,200 meters underground was a Japanese heavy bomber!

Was this a conspiracy or a supernatural force? With doubts and confusion, we summoned immense courage to enter the strata, but this exploration ended with an indescribable outcome. We were stranded in a sunless base, experiencing all sorts of extraordinary events, and finally, we boarded a plane to once again enter that vast void...

Everything was more bizarre than the worst we could have imagined.