What is the white jar on the mountain in Tibet?

It is a sutra tube (also called a sutra Zheng) in Tibetan Buddhism. According to Baidu Encyclopedia, the prayer tube is an instrument used by Tibetan Buddhism to preserve Buddhist scriptures. Generally cylindrical, made of copper or wood, the surface is decorated with various patterns and Buddha statues. Among them, white tube is a common decorative style, representing purity and wisdom. In Tibet, prayer tubes are usually placed in temples or various sacred places, such as mountain tops and deep canyons, and sometimes in farmland or forests to help harvest crops or protect the ecological environment. When believers come to worship incense, they will open the prayer tube, take out the Neijing, put it back after reading it, and then turn it, and the wonderful sentences of Buddhist scriptures will spread to all directions immediately. According to legend, one turn of the prayer wheel is equivalent to chanting a mantra once, and you can pray for disaster relief, peace and happiness.