China's urban high-tech complexity declining, impacting innovation and industry synergy.
A new index was created to measure how high-tech industries are spread out in different cities in China. By looking at data from 1996 to 2013, researchers found that the complexity of high-tech industries in Chinese cities decreased over time. They also discovered that cities with similar high-tech industries are often close to each other. This shows that high-tech industries in China are spreading out and influencing each other across regions. This study helps us understand what drives innovation in cities and how high-tech industries interact with each other.