2. Mix all the materials for making old noodles evenly, ferment them into honeycombs and refrigerate them.
3. Take 150g old dough, mix all the materials of the main dough, knead it into smooth dough, and ferment it to twice its size (it takes 5 hours).
4. Take about 1 gram of base surface, add water to melt it, add it to the dough and knead it evenly.
5. Roll out the kneaded dough, fold it, roll it out again, fold it and repeat it three times.
6. Roll up the rolled dough and divide it into small pieces.
7. Fully knead each small dose and steam it in a steamer for 30 minutes.
8. Turn the fire to medium fire for 20 minutes, and then boil it after 3 minutes.