Complex sentence: The use of the writing system, Nsibidi, was based on secret societies like Ekpe and Uli was another writing system mostly used as body art. Another factor is the Ibini Ukpabi shrine, who was a mediating god among the Aros.
Split into simpler sentences: The use of the writing system, Nsibidi, was based on secret societies like Ekpe. Another is the Ibini Ukpabi shrine, who was a mediating god among the Aros.