Yes, it is safe. Ice powder is a famous Han snack, which is cold and sweet. It can be packaged and sold at the school gate. It can be stored in the refrigerator the day before, which is very safe and hygienic. As a summer food, it is favored by people because of its cool, delicious and cheap. Ice powder, also known as bean jelly in some areas, originated in Yunnan and Guizhou.