Hefei.

The article presents Hefei, China's contribution to the Nature Index based on weighted fractional count of scientific articles published in 2013, with the University of Science and Technology of China (USTC) as the city's largest contributing institution. USTC's contributed papers include topics on chemistry such as the development of graphene-like materials and carbon aerogels, and on physics like quantum optics. The Hefei University of Technology focused on engineering topics like nanowires.