After seven failures, the best formula of the ice sheet is glutinous rice flour 45g, corn starch 20g, cassava flour 13g, sugar 30g, water 150g, salad oil 35g, all-powder sugar, adding water and stirring evenly, then adding oil and stirring until the oil is mixed into powder, then serving, covering with plastic wrap and steaming for about 20 minutes, and then rubbing the ice sheet with disposable gloves.