Researchers from a collaborative team in China and Singapore have achieved a landmark breakthrough by synthesizing and characterizing a cerium–carbon triple bond stabilized within an endohedral fullerene cage. This complex, [Ce≡CSc2]@C80, represents an unprecedented example of a lanthanide–carbon triple bond, a chemical species notoriously difficult to isolate due to the reactive nature of lanthanide elements and carbon multiple bonding. Using an array of techniques, including high-resolution X-ray crystallography, spectroscopic analysis, and advanced quantum chemical calculations, the team revealed a remarkably short cerium–carbon bond length of 1.969(7) Å, confirming robust triple bond character.