Miao textiles and silver jewelry/hats
From Wikipedia: According to the 2000 censuses, the number of ‘Miao’ in China was estimated to be about 9.6 million. The Miao nationality includes Hmong people as well as other culturally and linguistically related ethnic groups who do not call themselves Hmong. These include the Hmu, Kho (Qho) Xiong, and A-Hmao. The White Miao (Bai Miao) and Green Miao (Qing Miao) are Hmong groups.
A short video:
Miao Textiles at the Minneapolis Institute of Arts