The twenty-four turn is a place name, which is a section of the twenty-four turn highway. In ancient times, it was called elegant view, and the locals also called it semi-view. Located in the southern suburb of Qinglong County, Guizhou Province, at 1 km. Twenty-four twists and turns meander on a low steep slope between the majestic and steep Jinglongshan and Mopanshan, which is like a broken bamboo. One person defends it and ten thousand people cannot force it. The Ming and Qing Dynasties was a winding ancient post road, with a "Yongquan Temple" at the entrance and a tea pavilion outside the temple for passers-by to rest. There are stone carvings such as "Ganquan Scenic Spot", "Yunling Mountain Scenery", "Five Dry Roads" and "Drinking People" on the rock wall beside the temple. Crow Pass is a dangerous place, which is famous in Yunnan and Guizhou. The Ming poem said, "The wind is high and the mountains are high, and horseshoes are difficult to accumulate in the middle of the clouds. One is to save clothes and land, and the key is locked. " The 24-turn highway was built in 24 years of the Republic of China (1935) and completed the following year. The stone carvings of temples in Ming and Qing Dynasties were all damaged during road construction. In 16 (1927), Jia Shanxiang was ordered by Zhou Xicheng, president of the province, and Ma Huaichong, director of Guizhou Highway Bureau, to make a reconnaissance. In the 24th year of the Republic of China (1935), Engineer Zhou led the survey and design again. In the same year, Zeng Yangfu, director of Southwest Highway Bureau, supervised the construction and completed it at 1936, which is the only way for Guizhou-Yunnan Highway. At the beginning of World War II, American aid to China arrived in Kunming via the Yunnan-Myanmar Highway, and then it had to pass through the "24-way turn" Yunnan-Guizhou line before it could be sent to the front and Chongqing. The 24-way turn has become the main traffic artery in the China-Burma-India war zone, undertaking the task of transporting international aid materials to China. In order to cut off the throats of Guizhou and Yunnan, the Japanese invaders have repeatedly sent planes to bomb the 24-turn highway. After the outbreak of the Pacific War, Brigadier General joseph stilwell was appointed as the commander-in-chief of the US China-Burma-India Theater and the chief of staff of the Allied China Theater. US Secretary of the Army Stimson asked Stilwell to "maintain the transportation of the China-Burma Highway" and devote himself to "improving the combat effectiveness of the Indian army". 1942, American Highway Engineering Corps 1880 Engineering Battalion entered Jinglong, Guizhou Province to build the Yunnan-Guizhou Highway, and was stationed at Shaziling 3 kilometers away (also known as American Station). Mei Dong, the company commander, is responsible for repairing 24 bends with cement retaining walls made in the United States. With the cooperation of the local people, the task of road construction was completed, ensuring smooth traffic. American engineers have been stationed until more than a month after the unconditional surrender of the Japanese army. 1945, the first American motorcade arrived in Chongqing via the Sino-Indian Highway. In Chongqing, Chiang Kai-shek delivered a speech entitled "The Significance of Connecting the China-India Highway", renamed the Yunnan-Guizhou Highway "stilwell road", and made the Jinglong 24-way turn go down in history with stilwell road. The 24-turn highway, which has been preserved since the emergency repair by the US military, is 4 kilometers long and the effective road surface is about 6 meters wide. The straight line distance between the first turn under the mountain and the 24th turn at the top of the mountain is about 350m, and the vertical height is about 250m. The inclination of the slope is about 60 degrees. It takes about 8 minutes to drive from bottom to top, and about 6 minutes from top to bottom. Although the slope is steep, there is no sense of panic. Now it is maintained by the county highway bureau and can still be opened to traffic, but only a small number of vehicles pass through. During the period of 1954, Guizhou Provincial Highway Bureau slowed down the longitudinal slope on the slope near bend 24, and designed and built 6 kilometers. The asphalt road turned back is connected with the downhill intersection of No.24 bend at the foot of the mountain, and serves as the main traffic lane of National Highway 320.