➀ A team from the Ningbo Institute of Materials Technology and Engineering has developed a laser solid-phase synthesis method for creating high-entropy alloy nanoparticles encapsulated in graphene shells on a 3D porous carbon support. ➁ The method is efficient, requiring less than 1 ms to synthesize the nanoparticles, and can be scaled up. ➂ The resulting nanoparticles show excellent catalytic performance and stability, potentially outperforming commercial catalysts.