Tac Ka Coong Festival is a celebration held by the Co Tu ethnic people to offer thanks to the gods of mountains, forests, rivers and streams within the village, for bestowing upon their descendants a life of warmth, happiness, prosperity, bountiful harvests, and good health.

The dragon, known by the character "long", is a mythical creature steeped in supernatural qualities, standing at the forefront among the four sacred animals: "dragon, unicorn, tortoise, phoenix". It emerged thousands of years before the Common Era, gradually elevated to a symbol in East Asian culture. The dragon is seen as the ruler governing the rivers and seas, often referred to as the Dragon King.