First, bring the pot to a boil, then put the dumplings into the pot. Then what most people do is to boil three times, that is, after putting the dumplings in, add cold water to the pot, add cold water to the pot, and then add cold water to the pot. Of course, this means that dumplings with meat stuffing usually take about 8~ 10 minutes.
Another way is to keep the dumplings in a very small fire after they are put into the pot, that is, to keep the noodle soup in the pot slightly flowery, without adding cold water, and cook it at one time.
More importantly, you should remember that no matter whether it is cold water or hot water, the dumplings should be gently pushed after they are put into the pot, otherwise it will stick. This is what others say: "stir dumplings raw, stir noodles cooked". This means that the dumplings should be stirred when they are put into the pot, otherwise they will stick together, but if you cook noodles, don't stir them when you put them in, just let him push them away with the waves in the water.