Vicki, in your dream about the old abandoned mansion, the imagery of a once grand but now neglected structure could symbolize feelings about aspects of your life or your inner self that you feel have been overlooked or are in disrepair. Mansions often represent the self and one's accomplishments, so dreaming of an abandoned one might suggest there are unexplored or neglected parts of your life or potential.
The presence of visitors indicates that you may be opening up to new experiences or people, or perhaps there are outside influences that are prompting you to explore these neglected aspects. The dead man combined with an old tree presents a strong image of something that was once living now being static; this could represent a part of your life that is deeply rooted but feels lifeless, or it might symbolize growth that comes from dealing with past issues.
Your calmness in the dream, despite its seemingly eerie atmosphere, is quite telling. It suggests a level of acceptance or readiness to confront these aspects of your life. You're not afraid, which could mean you're at peace with the idea of delving into what has been left behind or you feel equipped to address whatever comes your way.
Reflecting on your previous dreams, there is a recurring theme of exploration, from conversing with Queen Elizabeth to discovering new areas like the park in Yau Tong. This mansion dream seems to continue that pattern of exploration but takes it inward, urging you to explore your own 'inner mansion' and the history it holds.
Remember, while these interpretations can provide insight, the mansion and its symbolism in your dream are unique to you. This dream doesn't seem to be a nightmare or associated with high emotional intensity, indicating that your subconscious might be nudging you towards self-reflection in a gentle manner.