1. If you want to cook quick-frozen dumplings without breaking their skins, we should first put them in the room temperature for a while, and then put them into the pot one by one instead of pouring them all at once.

2. Then, when the glutinous rice balls are just put into the pot, we'd better stir the glutinous rice balls in the pot with a spatula, so that they won't stick to the pot easily, so they won't break the skin when they are taken out.

3. Besides, we also need to pay attention to the fact that it is best to cook the dumplings after the water is boiled. After all the dumplings are cooked, adjust the fire to slow fire, and it will be almost cooked after the dumplings float on the surface.