Left: File photo taken in 1961 by Wang Nan shows a trainer equipping a diver with a compass before diving in Guangzhou, south China's Guangdong Province. Right: Photo taken on June 23, 2019 by Yang Guanyu shows Fu Yuming (L) preparing equipment for a diver in Lingshui Li Autonomous County, south China's Hainan Province. An increasing number of people in China have been participating in diving as a way of leisure. Meanwhile, the equipment has been upgraded and more advanced. 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)