While less common, there is some evidence that acllas were used in human sacrifice. This was tied to their role as gifts and the system of reciprocity throughout the entire empire due to their economic significance. In a ritual context, they were an extremely valuable sacrifice because they represented the capacity for so much potential wealth through the use of their skills in weaving, the brewing of chicha, and hospitality. They also represented a connection between Cuzco and the peripheral regions that they had conquered. This tying of the centre to the periphery was one of the most important aspects of the sacrifice of "acllas". The story of Tanta Carhua is one such account of the process of binding the centre and the periphery together.