For smooth assembly, pre-fold along the creases.
1. Firmly press the protruding center part straight into the empty hole.
2. Close the lid with the semicircular opening first.
3. Close the other lid.
4. Cover the outside and insert it firmly, as shown in the image.
5. Close the lid with the semicircular opening first.
6. Turn the box over, insert the bottle, and close the lids.