Top: File photo taken in 1958 by Li Jilu shows technicians observing the operation of China's first general-purpose electronic computer developed by the Institute of Computing Technology of Chinese Academy of Sciences and other relative organizations with technical assistance from the Soviet Union. Bottom: Photo taken on April 24, 2019 by Li Ran shows Meng Xiangfei (L), head of the applied research and development department of the National Supercomputer Center (NSCC) in Tianjin, inspecting high performance computer system at the center with his colleagues. In an increasingly fierce uphill race of exascale computing worldwide, more Chinese supercomputers are making the world's Top 500 list as seen in its latest edition published at this year's ISC High Performance (ISC), Europe's most important conference and networking event for the high-performance computing community. In 1949 when the People's Republic of China was founded, the Chinese people faced a devastated country that needed to be rebuilt from scratch after decades of warfare and chaos. After decades of unremitting endeavors and dedication by the Chinese people, China has grown to be the world's second largest economy. In 1952, China's GDP was 30 billion U.S. dollars, while in 2018, its GDP reached 13.61 trillion U.S. dollars, an increase of 452.6 times. A group of combo photos give you a glimpse of what Chinese people did decades ago and what they do right now. Undoubtedly, people from all walks of life in China with hard work and wisdom have made contributions to the country's development. (Xinhua)