Water chestnut lily and Sydney soup. Ingredients: water chestnut 30g, lily 1 g, Sydney 1 piece, and appropriate amount of rock sugar. Practice: Wash water chestnut, peel and mash, wash Sydney, peel and core, wash lily, add water and mix, then add appropriate amount of rock sugar and cook until the soup is cooked and sticky. Eat warm. Efficacy: water chestnut can clear away heat and promote fluid production, cool blood and detoxify, resolve phlegm and promote digestion; Pear can clear away heat and promote fluid production, moisten dryness and resolve phlegm; Lily moistens the lungs and relieves cough. The combination of the three can nourish yin and moisten dryness, resolve phlegm and relieve cough. Treat phlegm-heat cough, yellow and thick phlegm, and unfavorable throat. For children with chronic bronchitis and phlegm-heat syndrome.