1, 5G technology: China has made an important breakthrough in 5G communication technology and become the world's leading deployment country of 5G technology. China's 5G network covers a wide range, providing people with faster network connection speed and better network experience.
2. Artificial intelligence: China has made great progress in the field of artificial intelligence. Scientific research institutions and technology companies in China actively invest in the research and development and application of artificial intelligence technology, including machine learning, speech recognition and computer vision. China's artificial intelligence technology has been widely used in intelligent transportation, medical care, financial services and other fields.
3. High-speed rail technology: China's high-speed rail system is world-renowned, and China's high-speed rail network is large, fast, safe and reliable. China also actively promotes international cooperation in high-speed rail technology, and works with other countries to promote the development of high-speed rail.
4. Solar energy and wind technology: China is one of the countries with the largest installed capacity of solar energy and wind energy in the world. China has made important progress in renewable energy technology and built large-scale solar and wind power stations, making positive contributions to sustainable energy development.
Geographical survey of China.
China is high in the west and low in the east. Mountains, plateaus and hills account for 67% of the land area, while basins and plains account for 33% of the land area. The mountains are mostly east-west and northeast-southwest, mainly including Altai Mountain, Tianshan Mountain, Kunlun Mountain, Karakorum Mountain, Himalayan Mountain, Yinshan Mountain, Qinling Mountain, Nanling Mountain, Daxinganling Mountain, Changbai Mountain, Taihang Mountain, Wuyishan Mountain, Taiwan Province Mountain and Hengduan Mountain.
There is the highest Qinghai-Tibet Plateau in the world in the west, with an average elevation of more than 4,000 meters. It is called "the roof of the world", and Mount Everest is 8848.86 meters above sea level, which is the highest peak in the world. Inner Mongolia, Xinjiang, Loess Plateau, Sichuan Basin and Yunnan-Guizhou Plateau in the north and east are the second steps of China's topography. Daxinganling-Taihang Mountain-Wushan Mountain-Wuling Mountain-Xuefeng Mountain is the third step, and the coastline from east to east is mostly plain and hilly. The continental shelf to the east and south of the coastline is rich in seabed resources.