Photo taken on Sept. 18, 2021 shows the booth of quantum diamond atomic force microscope (QDAFM) during the 2021 Quantum Industry Conference in Hefei, east China's Anhui Province. Themed "Quantum Technology · Industry Revolution", the 2021 Quantum Industry Conference was held in Hefei on Saturday. The conference brought together a group of scientific researchers and industry leaders to discuss the development of the quantum industry and released a series of applications. (Xinhua/Han Xu)
