This Day, That Year

Editor's Note: This year marks the 40th anniversary of China's reform and opening-up policy.

Approved by the central government in 1988, Zhongguancun Science Park was the first high-tech park to be established in China and has been transformed into a hub of innovation and home to many tech giants.

China's "Silicon Valley" spans 483 square kilometers and hosts 25,000 technology companies. In 2016, the district accounted for 25 percent of Beijing's GDP.