Chinese medicine believes that the “five colors” enter the five internal organs of the human body, that is, blue (green) enters the liver, reddish enters the heart, yellow enters the spleen, white enters the lung, and black enters the kidney. Many green foods enter the liver and nourish the liver, such as mulberry sprouts, spring spinach, mung bean sprouts, shepherd's purse, and cucumbers.
中医认为，“五色”入通于人体五脏，即青（绿）入于肝，赤入于心，黄入于脾，白入于肺，黑入于肾。很多青（绿）色的食物都入肝养肝，其中就不乏清降肝火之物，如桑芽菜、春菠菜、绿豆芽、荠菜、青瓜等。
