First of all, we should mix high-gluten flour with water, knead it into dough, put it into water to wash out gluten, put the washed gluten into a steamer to steam it, and pour the washed flour slurry into flour and stir it evenly. Filter the thick batter. Brush a layer of oil on the steaming tray and pour the filtered batter evenly. Put it in the oven, and finally take out the cold rice noodles.