Specific production steps: firstly, melt the milk with yeast powder, add the white sugar of the egg, and fully stir. Then, add flour, put salt on it, and stir the flour into a flocculent shape. Finally, knead the dough, simmer for 30 minutes, fully knead the dough, exhaust, divide it into 8 parts, knead it round, relax for 10 minute, gently press every two dough, press a hole with your thumb in the middle, code it into a baking tray, brush the dough surface with oil and sprinkle it.