You can put some salt in the water to increase the density and make it stronger. The specific steps are as follows:

1. Pour clean drinking water evenly into the bear ice cube mold. Not too much, just close to the edge.

2. Place the mold with good drinking water into the freezer layer of the refrigerator smoothly. Wait one night.

3. The next day, take out the mold. You can prepare a container and hold the ice cubes at the bottom of the mold.