Ancient technique of salt production well-preserved in Mangkam County, China's Tibet

Photo shows salt stalactites formed by trickling brines in Mangkam County, southwest China's Tibet Autonomous Region, May 22, 2019. An ancient technique of salt production since Tang Dynasty (618-907) is well-preserved in Mangkam County. Local people follow a salt harvesting method by collecting brines from salt mines and ponds and evaporating them in the sun until crystallization. (Xinhua/Li Xin)