How to achieve high-level integration of composite micro-nano structures with different structural characteristics through a minimalist and universal process? In International Journal of Extreme Manufacturing, researchers from Zhejiang University, University of Shanghai for Science and Technology, and Aalborg University revealed a controllable ultrafast laser-induced focal volume light field and experimentally succeeded in highly efficient one-step composite structuring in multiple transparent solids based on focal volume optical printing.  Their work reports a highly universal all-optical fabrication of composite micro-nanostructures in various transparent solids with independent controllability in multiple degrees of freedom, expands the current cognition of ultrafast laser-based material modification in transparent solids, and establishes a new scientific aspect of strong-field optics, namely, focal volume optics for composite structuring transparent solids.