On August 21st, Chinese scientists achieved a groundbreaking feat by elongating a 'metal wire' with a diameter of just a single atom to reach the micrometer scale. To put this in perspective, this achievement is akin to stretching a household copper wire to a length of 4 meters while maintaining its minuscule thickness. The research team, led by Li Kuo from the Beijing High Pressure Science Research Center, employed an innovative strategy known as high-pressure solid-phase topological polymerization. This method enabled them to synthesize, for the first time, a carbon-encapsulated single-metal atomic chain that boasts a micrometer-scale length, atomic-level thickness, and remarkable structural stability. This significant research milestone was duly published in the esteemed international academic journal Science on the same day, August 21st.