Lignum nephriticum cup crafted from narra wood (the namesake of your province) made opalescent colors when drinking water is poured into it. These wooden cups were A serious pre-colonial and colonial business of Naga. Naga could be the native pre-colonial title of the city. It can be named following https://titustgsdo.activablog.com/27577086/a-secret-weapon-for-23naga