Even though most modern Newars are either Hindu or Buddhist or a mixture of the two as a result of at least two millennia of Sanskritization and practice a complicated, ritualistic religious life, vestigal non-Sanskritic elements can be seen in some of their practices that have similarities with the cultures of other Mongoloid groups in the north-east region of India. Sudarshan Tiwari of Institute of Engineering, Tribhuvan University, in his essay 'The Temples of the Kirata Nepal' argues that the Newar temple technology based on brick and timber usage and the rectangular temple design used for 'Tantric' Aju and Ajima deities are pre-Licchavi in origin and reflect Newar religious values and geometrical aesthetics from the Kirati period.