The key is to make the pimples evenly, and don't bring flour to the pot, so it won't be sticky.

Turn the faucet to a very small water flow, as long as it is not a drop of water. Put the noodles in the basin, and keep stirring under the water flow. Where there are many lumps, the water will flow there. There is not much flour left. Move the basin outside, continue stirring, put the lumps in the prepared soup, stir the remaining noodles at the bottom of the basin with water, and put them in the pot.