China has made its name in science and technology, including space exploration, quantum science and infrastructure construction around the world. In the construction industry, central China's Optical Valley Square in Wuhan City, crowned "Asia's largest underground urban complex," covers a total area of 160,000 square meters, equivalent to 23 football fields, with workers digging as deep as 34 meters. CGTN goes to Wuhan City in Hubei Province to find out more about the innovative factors inside the city, the center of high-tech optical industries.

CGTN's special program "New China" gives you an in-depth look at China 70 years on. Our crew is on a 12-day journey to China's southwest, southeast and northeast. Don't miss out.