The "Past Stories of New China" series aims to present major events in various fields such as politics, economy, people's livelihood, infrastructure, science and technology, archeology, and culture since the 70th anniversary of the founding of New China to readers in the form of narrations by those who have experienced them. This volume is a volume on major infrastructure construction, covering changes in major infrastructure construction since the 70th anniversary of the founding of the People's Republic of China, such as roads, railways, bridges, water conservancy, reservoirs, and construction projects. It covers a large time span and covers a wide range of content. It is a rare good book for understanding the great changes in the development of infrastructure construction in the past 70 years since the founding of the People's Republic of China.