According to the Suixiju Yin Shi Pu, wild soybean (often referring to yellow soybean) is sweet and neutral and is used to tonify the middle burner and detoxify. Its gentle flavor enables it to nourish the spleen and boost central Qi. Modern research has revealed that soybeans are rich in plant proteins that enhance immunity, isoflavones that delay aging, lecithin that aids absorption, saponins with potent antioxidant activity, and high-quality protease inhibitors—making wild soybean a valued ingredient for its multifaceted benefits.