How to make authentic ice powder?

The process of making ice powder is as follows:

Ingredients: 50g of ice powder, 2000ml of clear water.

Accessories: brown sugar 100g, water 100ml, 20g raisins, 20g hawthorn slices, 20g honey red beans, 20g cereal and 20g cooked white sesame seeds.

1. Put 2000 ml of water in the pot, add a bag of ice powder, stir well and bring to a boil.

2. After cooking, pour it into a bowl, let it cool and put it in the refrigerator to freeze until it solidifies.

3. Pour100g brown sugar into the pot, pour100ml water, stir well, and heat until it is boiling and sticky. Then pour it into a bowl and let it cool.

4. Cut the ice powder into pieces, pour it into brown sugar water, add raisins, hawthorn pieces, honey red beans, cereal and cooked white sesame seeds, and mix well.