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The Yi people have a long history of slash-and-burn farming, a traditional agricultural practice that has shaped their way of life for centuries. As recorded in "Old School Notes," in the remote mountainous regions of Chen, Shen, and Jing states, people would "burn the mountains and cultivate them, planting only beans. If food was scarce, they would hunt wild animals." Similarly, "The Conquest of the Sui Road" mentions that in the Shenxiang area, farmers mainly grew millet, often in the Gangzi region. When it was time to plant, they would first cut down trees and set them on fire. This method, known as "slash-and-burn," was common among many ethnic groups in southern China.
Today, remnants of this ancient technique can still be seen. Among the Dong people, a fireproof isolation belt is created between two forests, typically a few meters wide, sometimes extending up to ten meters. This barrier serves as a crucial measure to prevent the spread of fires during slash-and-burn practices, helping to protect forest resources.
In addition, the Yi people have a custom of burning cattle pastures annually. This involves clearing grassy slopes where their livestock graze. These areas are carefully managed with fire barriers to prevent uncontrolled fires. As a result, forest fires have been rare in Yi communities throughout history. This traditional practice plays a vital role in maintaining the balance of local ecosystems and preserving the natural environment. 
What is the fire barrier used by the Yi people to raise cattle? Dacheng Xiangdong Insulation Refractory Material Factory 13473696600 15731614448