As we know, China has a vast territory. It is such a vast land. It has many different types of climatic conditions, which breeds rich and colorful China culture. However, the benefits will also have negative effects, such as the Mogao Grottoes in Dunhuang. For thousands of years, our ancestors have exhausted their lives in this great and deep cave, casting knowledge and wisdom on every wall with brushes, hoping that knowledge and wisdom will last forever. At that time, who would have thought that one day these huge and magnificent works would be destroyed by the forces of nature? Located in the northwest of China, the Mogao Grottoes is the only way to connect the Silk Road between Asia and Europe, and it is the biggest treasure on a long road. Although it was stolen a hundred years ago, the biggest reason for its damage is the disaster caused by continental climate. Influenced by the Mongolian high pressure in the north, the climate in Dunhuang area is dry all the year round, and sandstorms are frequent. The annual precipitation is only over 40 mm, while the annual evaporation is as high as over 4,300 mm. For thousands of years, our Mogao Grottoes have been frequently attacked by sandstorms, coupled with long-term drought, earthquake and rain erosion, and the cave walls have been eroded and thinned. To make matters worse, cave murals have begun to change color, from one to another, brittle and even off-base.
Since the 1940s, the people of China have taken conscious actions to protect our great historical treasure. First, people have built sand walls on the cliff surface, but the results are minimal; Later, I tried to dig an anti-sand ditch, which was quickly filled up by sand. In recent years, we have finally found a good way to control sand. First of all, we are in the sand and grass, and all the sand boxes on the grass can be firmly fixed two kilometers away, thus forming a shelterbelt to effectively adjust the regional climate. Scientists say that this can prevent nearly 80% sand from entering the interior of Mogao.
We have indeed made some encouraging progress in protecting our precious world cultural heritage, but this should not be just a temporary rescue project. These factors brought by natural disasters will undoubtedly continue to exist, and the threat to the Mogao Grottoes still exists, and the efforts for this need to be sustained from generation to generation.
Dear friends, let's join hands to protect our splendid ancient civilization. We may be a little younger, but as long as we have a firm belief, jewelry will shine forever. Our spirit will pass from one person to another.
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