At the confluence of Dadu River, Qingyi River and Minjiang River, the world's tallest ancient stone Maitreya Buddha sits like Leshan Giant Buddha, sitting upright with both hands touching his knees, looking solemn and solemn. Tourists from all directions watch the Giant Buddha from the Buddha head platform and praise it from time to time. The Jiuqu plank road on the right side of the Giant Buddha has been closed and encircled, and preliminary investigation, research and design work for rescue and reinforcement of regional dangerous rocks is being carried out... This is what China News Agency reporter saw in Leshan Giant Buddha Scenic Spot in Sichuan on the 14th. Excavated in the early years of Kaiyuan of Tang Dynasty (AD 713), Leshan Giant Buddha with a height of 71 meters is the tallest sitting statue of Maitreya in ancient stone in the world and is listed in the double heritage list of world culture and nature. After thousands of years of wind, frost, rain and snow, this giant Grottoes has left a mottled mark of time, but it does not damage its soul stirring beauty. The Leshan Giant Buddha is cut along the mountain and integrated with the surrounding mountains. It is located at the confluence of the three rivers. The climate is humid and the red sandstone is loose. The red sandstone is loose and easy to weathering, which brings great difficulties to the cultural protection work. After the discovery of cracks in the Jiuqu plank road built at the same time as the Giant Buddha, the Management Committee of Leshan Giant Buddha Scenic Spot and the cultural relics department immediately carried out relevant work. After several years of observation and scientific research and judgment, the preliminary investigation, research and design work for rescue and reinforcement of regional dangerous rocks is being carried out. This is only one of the measures taken by cultural protection workers to protect Leshan Giant Buddha. Peng Xueyi, former director of Leshan Giant Buddha cultural relics protection and Management Institute and engaged in cultural relics protection for 32 years, introduced that at present, the Giant Buddha is mainly faced with five main problems: weathering, water damage (seepage, rainfall, river water, condensate, etc.), plant and microbial diseases, bulging and falling off of the later repair layer, and development of dangerous rocks. "The protection of Leshan Giant Buddha is a long-term, complex and arduous work, which should be as meticulous as peeling cocoons and silk." Peng Xueyi told reporters that when the Leshan Giant Buddha was built, a 13 storey pavilion was sheltered and protected. Later, it was destroyed in the song and Yuan Dynasties due to war and other reasons. Later, the Giant Buddha was exposed to nature for a long time and suffered from the sun and rain all year round, so the repair of Leshan Giant Buddha has a long history. According to records, the Giant Buddha was roughly repaired twice in the Song Dynasty, three times in the Republic of China, and eight times after the founding of new China. In fact, the process of protecting the Leshan Giant Buddha is also the process of cultural protection workers "fighting" against cave diseases. Fortunately, with the development of science and technology, all kinds of advanced technologies make the cultural protection work "even more powerful". In the preliminary research and survey project of rescue protection for the cracked and damaged area of the chest and abdomen of Leshan Giant Buddha implemented from October 2018 to April 2019, UAV aerial survey, three-dimensional laser scanning, optical fiber monitoring system and fluorescent carbon point tracing method have "stepped into battle" one after another, with remarkable results. Chen Lin, deputy secretary of the Management Committee of Leshan Giant Buddha Scenic Spot, told reporters that the diseases of the Giant Buddha are caused by its regional natural environment. It is necessary to protect the Millennium Grottoes through continuous daily maintenance of cultural relics and scientific and appropriate repair. In order to better protect the Giant Buddha, the scenic spot adheres to daily inspection, timely deal with problems found, and regularly carry out daily maintenance for Leshan Giant Buddha, such as removing weeds from Leshan Giant Buddha, dredging drainage corridors, etc. Chen Lin said that while strictly implementing the regulations on the protection of the world cultural and natural heritage of Leshan Giant Buddha, the Management Committee of the scenic spot will strengthen cooperation with domestic and foreign scientific research institutes to carry out scientific research on disease treatment, protection technology and repair materials of Leshan Giant Buddha. For the disease treatment of Leshan Giant Buddha, we will implement it according to law after reporting to the cultural relics department for approval according to expert opinions. "The black substance on the nose of the Giant Buddha is a trace left by microbial metabolism." After solving the questions for the tourists around him, Peng Xueyi, with some gray hair, walked back to the reporter, looked at the Giant Buddha who looked at Sanjiang day after day, and simply expressed his long cherished wish, "I hope Leshan Giant Buddha will always be healthy and healthy, so that our future generations can admire the majestic posture of the Giant Buddha." (outlook new era)