Explore the intricacies of III-Nitride materials in this 19-minute conference talk delivered by Guilherme Matos Sipahi from USP São Carlos. Delve into the fascinating phenomenon of strain and crystal field splitting inversion in III-Nitrides, a topic of significant interest in condensed matter physics. Gain insights into the latest research findings and their implications for the field. This presentation was part of the II ICTP-SAIFR Condensed Matter Theory in the Metropolis conference held from November 9-11, 2022, organized by ICTP-SAIFR.