Which ethnic group's dance is the Potlatch? Tibetan or Qiang?

Pots Zhuang--Tibetan folk dance. Danced during festivals or agricultural leisure, men and women form a circle, from right to left, singing and dancing. The "fruit table" - pot Zhuang dance, early with the Tibetan slave society and oath-taking activities, and later gradually evolved into a combination of song and dance, singing and dancing in a circle song and dance form. (I should say it's mainly Tibetan)

The Qiang seem to have a potshuang as well.

"Qiangzhai Panzhuang", or Shalang, is also a kind of "panzhuang" dance, which is necessary for the Qiang people's rituals, and then after development, this ritual dance was slowly canceled, but every time the Qiang people's festivals, people will still dance! "But every time when the Qiang people have a festival, they will still dance the Qiang Zhai Panzhuang dance, and then eat and dance at the same time. The dance is danced while eating to celebrate important festivals. This form was then used by the Qiang people to entertain important guests.

Whenever night falls, the men, women and children of the Qiang village will gather in the bonfire square to dance the potshuang dance together to celebrate the harvest of the day's labor.