Stability and firmness: Square represents stability and structure, and cardboard represents firm or stable materials. This dream may indicate that you are looking for a stable and reliable foundation in real life, or you hope that things can remain more solid and lasting.
Practical, practical: cardboard is usually used for packaging, transportation and protection of goods, practical and practical. This may reflect that you pay attention to practicality and utility in your life and pursue practicality and functionality of things.
Constraints and pressure: cardboard may symbolize constraints or pressure. Feeling wrapped or limited by square cardboard in a dream may mean that you feel limited or stressed in some situation. This may be an external restriction, or it may be a restriction you set for yourself.
It should be noted that this is only a general view of dream interpretation, which does not necessarily mean that it is accurate. The interpretation of dreams should also take into account personal background, situation and emotional state. If you have further questions or puzzles about dreams, you'd better consult a professional psychologist or dream interpreter to get a more accurate explanation.