Usage: Take about 5g of lotus heart, put it in a pot or vase, add about 100ml of boiling water, depending on the strength of your preference, steep for 3 minutes, pour into a cup, then drink. Pour out all the old water, add boiling water again, steep and drink (1 time of lotus heart, add about 2-3 times of boiling water), put the lotus heart in a pot and boil it, the better. Store well in a cool, dry place, temperature from 5 celcious degree - 10 celcious degree.