The meaning of the zem zem in so long a letter of Mariama Ba?

In Mariama Bâ's "So Long a Letter," the concept of "zem zem" symbolizes the deep emotional and spiritual connection between women, particularly in the context of shared experiences and struggles. It represents a form of solidarity and understanding that transcends individual hardships, highlighting the importance of female relationships in navigating societal challenges. Through this bond, women find strength and resilience, as they support one another in their journeys of love, loss, and self-discovery.