Dreaming of a child falling from a tall building can have various interpretations, depending on the dreamer's personal context and emotions. Here are some possible interpretations:

1. Innocence and Vulnerability: The child in the dream may represent innocence, vulnerability, or a part of yourself that feels unprotected. The fall could symbolize the fear of losing that innocence or feeling exposed to painful emotions.

2. Sudden Changes: Falling from a great height can represent a sudden change or a sense of losing control in your life. The child who does not die but cries might indicate that, although you are facing difficulties or frustrations, there is still a possibility of recovery or learning from the experience.

3. Care and Protection: This dream could also be a manifestation of your protective instincts. Perhaps you feel the need to care for others (like a child) or for yourself in situations that seem risky.

4. Fears and Anxieties: The image of falling may reflect internal fears or anxieties about failure, falling in personal or professional life. The child's sadness could represent the distress you feel when confronting these fears.

It is important to consider how you feel in the dream and in your daily life to gain a better understanding of its meaning. Reflect on the current circumstances in your life that may be influencing this dream.