Sweet enters the spleen. Spicy or volatile substances enter the lungs. The salty enters the kidneys. The influences these flavors produce are upon each organ, yet each organ influences others in both generative and exclusive ways. As parts of the body are interrelated and in turn human beings are interrelated with each other and with the cosmos, which is originated from the qi of the great unification.
Life is an integrated process.
Chinese ancestors knew that nature is just like mother, nurturing human beings. Any environmental imbalance will bring great disasters to human beings. To maintain good health, one has to maintain internal balance of own body and also live in harmony with nature.