Photo taken on December 6, 2018 shows a double helix overpass at Zhongguancun in Beijing, also known as the city's "Silicon Valley." The overpass will be officially put into service this Saturday, December 8, 2018. [Photo: VCG]"

The photo shows the inside of a new overpass located at Zhongguancun in Beijing. It will be put into service on Saturday, December 8, 2018. [Photo: VCG]"

Photo taken on December 6, 2018 shows a double helix overpass at Zhongguancun in Beijing, also known as the city's "Silicon Valley." The overpass will be officially put into service this Saturday, December 8, 2018. [Photo: VCG]"

A double helix overpass lights up Zhongguancun of Beijing, also known as the city's "Silicon Valley." [Photo: VCG]"