It's different between western countries and eastern countries about how to keep healthy. Traditional Chinese doctors believe we need aof cool yin and hot yang to be healthy. In China, herbs(草药) are the main medicine but in western countries they use pills.

    In China, you are quiet and always tired, Chinese doctors might think you have too much yin. You should eat more hot yang food. It can give you some.But in western countries, doctors will check your body. They might give you some  pills to cure(治愈) your disease. People who are easily nervous andmight have too much yang in their bodies. Chinese doctors believe they should eat more yin food.