Explanation:

Chhau dance, also spelled as Chau or Chhaau, is a semi classical Indian dance with martial, tribal and folk traditions, with origins in eastern India. It is found in three styles named after the location where they are performed, i.e. the Purulia Chau of Bengal, the Seraikella Chau of Jharkhand, and the Mayurbhanj Chau of Odisha. The dance ranges from celebrating martial arts, acrobatics and athletics performed in festive themes of a folk dance, to a structured dance with religious themes found in Shaivism, Shaktism and Vaishnavism. The two styles of Chhau dance that use masks, blend within it forms of both dance and martial practices employing mock combat techniques (called khel), stylized gaits of birds and animals (called chalis and topkas) and movements based on the chores of village housewives (called uflis).