The cream inside the cake is made by whipping the liquid cream as follows:

Preparation materials: a box of light cream, 300 grams of ice water, 30 grams of sugar

The first step, beforehand, will be frozen into ice water, and then take out the ice water and the cream is ready to be prepared, as shown in the picture below:

The second step, the cream will be poured into a clean container, add sugar, and then put it into the container with the cream, and then put it into the ice water.

The third step is to put the container with the cream in the ice water, as shown in the following picture:

The fourth step is to use an electric whisk to beat the sugar at low speed for about a few seconds, as shown in the following picture:

The fifth step is to turn the whisk to high speed, and beat the sugar until you can see the clear lines, as shown in the following picture:

The sixth step is to continue beating while watching, and the second step is to turn it to high speed. The whisk can be lifted to pull out firm corners, this time the whipping is complete, as shown in the picture below:

Step 7, whipped light cream, as shown in the picture below: