This work is a personal project that combines a photo-taking feature with a video game. In the game, time has stopped, and players can use "photo taking" the only action besides walking, to summon moments from a family album within a real-time rendered desert world.The artist follows the clues from the family album to digitally recreate in 3D the locations depicted in the photos within the game, with the spatial arrangements reflecting long-term records of dream maps. In the exhibition space, scattered photos also serve as clues to the game. The game is about the solitary process of walking on the surface of a subconscious planet covered with psychological maps. Moments from decades ago, a few years ago, and even yesterday, converge simultaneously. This work continues a question the artist posed years ago: Can we use geography to understand history and space to understand time with the help of evolving technology?The work originates from a reflection on the Dyson sphere, a construct in science fiction. If, following the logic of the Dyson sphere, everything can be seen as purely quantifiable resources and energy, what do the entities within our memories mean to us personally?