According to the legend, they saw a deer and wanted to eat it, so they chased it until they arrived in the side of Sun Moon lake.

Women’s traditional clothing mainly consists of a head scarf, a sleeved blouse, a corset, a waist skirt, a belt, knee breeches, and a crown made of flowers and plants.

The corset is a one-piece garment that functions as a skirt and is made of two rectangular pieces of cotton that reach to the knees and are fastened diagonally to each other over the left and right shoulders, and then tied with a belt.

Men’s traditional clothing consists of headgear, headwear, chest wear, vest, skirt, breech-less trousers, and leather shoes.

The Thao have been mistakenly regarded as the "Tsou" (a separate and different ethnic group of Aboriginals) since the time of Japanese occupation.

Thus, the domain of the Thaos/Ngans had been registered as "Tsous from the flatlands of the mountains" under the nine ethnic groups of Taiwan’s Indigenous peoples.