2. Pour the stirred yeast powder into the noodles and stir evenly again. Then mix the dough with milk or warm water, and the steamed bread surface should be smooth, so that the steamed bread is hard-faced.

3. Keep the dough in a hot place for one to two hours.

4. Add a proper amount of baking soda to the noodles and mix well. Leave it for 20 minutes.