Prepare a proper amount of ginger slices, wash the fruit, peel it, slice it for later use, add oysters and ginger slices after boiling water (the oysters are treated with flying water before shelling and taking meat), cover the pot, boil it, add the fruit after boiling, cover the pot, cook for about 10 minute, add a proper amount of salt to taste before turning off the fire, add a little tail oil, and serve on a plate. This is a light summer soup.