Although excessive rainfall brings disaster, man has always depended on rain to ensure a steady food supply. Farmers stricken by drought looked to the clouds for succour, and ancient kings made sacrifices to ensure rainfall in good season. All living things rely on rain for their existence, and rainwater is indeed the fountainhead of life.
雨多雖成害，但由「久旱望雲霓」，到農民須看天吃飯，古時帝王有祈雨祭典，人類飲用的水由「天上」來，萬物滋長靠的是雨看來，雨水確是萬物的生命泉源。