First, the best time to cook the dumplings is usually about 10 minutes. After the water boils, add salt to prevent the dumplings from sticking together, and then put the lid on the pot to keep the dumplings from floating on the water.
Dumplings floating in the water and then add some cool water, cooking dumplings in the process of adding three times cool water, so as to prevent the dumplings boiled broken skin, three times after the dumplings are cooked, about ten minutes or so.