1. Mix 100 grams of flour, 2 grams of sugar, and 2 grams of yeast. Mix well and add an egg. Add water while stirring. Knead it into a dough and put it into a basin. .

2. Cover the dough basin with plastic wrap and put it in the oven. Put a bowl of hot water at the bottom of the oven and take it out after the dough has doubled in size.

3. Place the removed dough on the chopping board to deflate, roll it into a round or square shape, put it in the oven to continue fermenting, and then take it out after it has doubled in size.

4. Preheat the oven to 200 degrees for five minutes. During this period, use a fork to prick the dough, score a few marks on the surface with a knife, brush the surface with honey or egg yolk liquid, put it in the oven, and take it out at 200 degrees for about 15 minutes.