To perfectly portray his role as the grandfather of an alien boy, Zhou, an actor in his 60s, immerses himself in life experiences, spending the summer tirelessly accompanying his grandson, Little Walnut. Full of energy and curiosity, Little Walnut engages in a series of enchanting adventures: magical tricks, wild Lego constructions, rainbows, and cameras... Each story is unforgettable, with a careful analysis of Little Walnut's psychological activities at the end, sparking thought-provoking reflections on child education. The unexpected ending also brings a strong twist. Zhang Zhilu's rigorous writing style is reflected in the unique structure of the work, its rich connotations, and the concise prose.