As the oldest bacteria dating back 3.5 billion years, cyanobacteria, a true ancestor of the Anthropocene, “converses” with the girl in an otherworldly and fantastical way, evoking her memories of her grandmother and some fragmented scenes that do not belong to her but to this land. In the ending, the cyanobacteria goes to the four-dimensional world through incineration, while the girl enters the darkness and heads to the bar, pointing to the author’s divergent creation based on the “Klein bottle” - “All things die, and after death, they are reborn.”