Nature Index 2021 China, released on May 26, highlights the areas that dominate China's research output in the field of natural sciences. The top ten areas with the highest research output include Beijing, Shanghai, Jiangsu, Guangdong, Hubei, Zhejiang, Anhui, Shandong, Tianjin and Hong Kong. Most of the areas are located in the east of the country.

The Nature Index 2021 China supplement is based on the Nature Index database. The ranking is based on the combined article share of leading Chinese institutions in different areas.

Here are the top ten leading areas for research output in 2020. 

10. Hong Kong