The wool spinning technique is a special weaving process. It first soaks wool, camel hair, etc. with hot water, then squeezes it, and uses sticks to roll and rub the wool together to form a non-woven wool fabric called "felt". Felt was called "" or "" in ancient times. As early as the Neolithic Age, my country had the technology of rolling felt with sticks. Zhou Dynasty historical records: felt is wool, rubbing wool or felt. Jia Sixie's "Qimin Yaoshu" during the Northern Wei Dynasty (386-534) stated: "When making felt, it does not need to be thick or large, but only tight, thin and evenly balanced." It can be seen that the manufacture of felt was already quite common at that time. Entering the Tang Dynasty, the use of felt became more common. The saddle felts of Yuanzhou (now Gu County, Ningxia), Lingzhou (now Lingwu County, Ningxia), Ningzhou (now Ning County, Gansu), and Fengzhou (now Wuyuan County, Inner Mongolia) were all famous in the northwest. According to the "New Book of Tang", the Tubo Kingdom (located in the present Qinghai-Tibet Plateau) was also famous for red felt and rosy felt, and tribute was paid to Chang'an. At present, the main production areas of felt are concentrated in Sichuan, Gansu, Qinghai, Inner Mongolia, Ningxia and other northwestern ethnic minority areas. According to their uses, they can be divided into multiple varieties, including kang felt, cushion felt, prayer felt, inner felt (surrounded by the inner wall of yurts, etc.), felt (surrounded by the outer wall), colored felt (made of colored wool), embroidery (decorated with embroidery), cut felt (cut into three-dimensional shapes according to the outline of the colored pattern on the felt), stove felt (placed next to the stove), etc. Felt can also be used to sew shoulder bags, saddle bags, sundries bags, etc., which are indispensable necessities in the daily life of northwestern ethnic minorities. The Tibetan cow and wool weaving technique is a product of the specific ecological environment of the grassland. From ancient times to the present, this technique and its products have been accompanying the grassland herders and have become an important part of their history and culture. For thousands of years, the Tibetan herders in Seda County, Sichuan Province, from daily necessities to clothing and living tents, have been inseparable from the cow and wool weaving technique. Seda County's plush fabrics are made from wool from yaks, sheep, Tibetan goats and other cattle, and are processed and produced using textile and rolling techniques. They are both heat-insulating and moisture-proof, and durable, and are very characteristic of the Qinghai-Tibet Plateau. (No pictures yet, welcome to provide.) (No pictures yet, welcome to provide.)