▎ 摘　　要

Stimuli-responsive fusion and fission are widely observed in both bio-organizations and artificial molecular assemblies. Recently, Professor Gao's group in Zhejiang University discovered and explained an interesting phenomenon that precisely reversible fusion and fission in a bundle of wet-spun graphene oxide fibers is possible. It provides a new model to uncover the dynamic assembly of macroscopic soft materials. This study hopefully inspires further research in engineering structural materials, as well as fields requiring a stimuli-responsive and dynamic system.