1. Different national languages: Dai language belongs to Zhuang-Dong language family in Sino-Tibetan language family, including Dehong dialect and Xishuangbanna dialect. Dai people have pinyin characters, and the characters used in different places are slightly different. Han people use Chinese and Chinese characters.

2. Religious belief: Dai people are all religious people and believe in Buddhism, which is called Hinayana Buddhism. It is said that Buddhism spread to the south was introduced by a man named Ajudarasi, with a history of more than 1000 years. Han people have no fixed religious beliefs.

3. Different diets: The Dai people take rice as their staple food, and the most distinctive one is bamboo tube rice. The production method is to put rice in a fresh bamboo tube, add water, and barbecue on the fire, which is fragrant and delicious. Han people eat cooked rice and generally don't bake it.

References:

Dai-Baidu encyclopedia