In the story, there are both the foreshadowing of Lin Xi's planting of the sycamore tree, and the future prospects of the genetically optimized sycamore tree moving toward "harmony and symbiosis of all life." It also uses details such as the emotions of the elderly resident, from the initial curiosity about the phenomenon of plant symbiosis to the gradual unveiling of the "leaf-environment symbiosis". From the mysterious veil to letting more people understand and participate in this exploration of life symbiosis through thematic exhibitions and "leaf vein nets", the people in the story found the true meaning of life in the world of plants: true continuation is not to grow alone, but to live in gentle symbiosis with the world. Just like the story of Three Cities, with the care and protection of countless people, they have grown into a need for each other.
