Rui Shanshan is a hydrophobic pore ratio designer for understory humus soil potted plants. She can determine the moisture content and air permeability by rubbing the soil with her hands. Seven years ago, she helped a strange man resuscitate a dying orchid at the flower market, leaving a handwritten maintenance note and then quietly disappeared. Seven years later, we met again at the annual meeting of the industry. The flower grower back then was now the well-known landscape designer Lu Yan. The two were forced to cooperate because of an endangered fern conservation project. During the process of repeatedly adjusting the pot soil ratio, Rui Shanshan discovered that Lu Yan had kept every note. The reason why she backed down at the time - she was afraid that her status as a soil engineer would not be worthy of her as a designer - has now become the only antidote to Lu Yan's design bottleneck. Every time the pores are hardened and every time the proportion is overturned, we are tortured: Is the soil mismatched, or is the emotion mismatched? The humus soil under the forest needs the right density to support the root system, and the human heart also needs the right balance to retain the lover. This is a story about the profession of horticulture soil subdivision, which is more down-to-earth than flower sealants and better than potted plant maintenance.