Your dream is rich with symbolism and emotions, reflecting various aspects of your life and inner thoughts. Here’s a breakdown of some key elements:

1. Travel and Packing: The trip signifies a journey, possibly representing personal growth or changes in your life. Packing and having things spill out may indicate feelings of being overwhelmed or unprepared for these changes.
2. The Group of People: The presence of a joint family and your students suggests a desire for connection and community. It might reflect your role as a caregiver or educator, emphasizing your responsibility toward others.
3. Content Creator and Food: The invitation from the content creator and the focus on food, particularly Korean cuisine, may symbolize nourishment, both physical and emotional. Food often represents comfort, and the act of trying kimchi despite initial skepticism could symbolize being open to new experiences or ideas.
4. Interaction with Your Deceased Mother: This is a profound element of your dream. Seeing your mother and her comforting gesture indicates a deep emotional connection and possibly unresolved feelings regarding her passing. Her question about hunger may reflect a need for emotional sustenance or support in your life.
5. Feeling Sad: The sadness at the end, particularly regarding the food, could symbolize feelings of loss or disappointment in your current life situation. It suggests a longing for connection, nurturing, or perhaps a fear of losing what comforts you.

Overall, your dream seems to express a blend of exploration, connection, and emotional processing, particularly regarding your role in life, your experiences with others, and your relationship with your mother. It may be helpful to reflect on what aspects of these themes resonate with you in your waking life and how you might address any feelings of overwhelm or sadness you’re experiencing.