The protagonist of "Mysterious Earth Castle" Linglong travels through three time and space, showing the past and present life of the earthen castle one by one. The convoy of new rural construction is rolling over again. Green mountains and green valleys, clear streams and pools, the thick golden earth walls are full of vitality. The rotating windmills on the top of the distant mountains and the red cave dwellings in the ditches interpret Linglong's life as ethereal, mysterious and absurd, but also full of flesh and blood.