In 2021, the sales of liposomes in domestic public hospitals exceeded 5 billion (RMB) yuan. The remarkable breadth of applications not only highlights the power of nanostructures but also reveals the roadblocks that need to be removed—complex design process, difficulty in controlling the formation of assemblies and tuning their sizes as well as high cost and low stability in vivo. Here, through designing the phase separation behaviors of synthetic RNA and protein molecules, our project aims to construct several ordered RNA-protein condensates called XMU egg, providing a way to synthesize multi-scale ordered materials in vivo. Based on a core with light-responsive properties, XMU egg could be self-assembled into a egg-like multilayer nanostructure by the exposure to blue light. This structure could enhance production through the aggregation of pathway enzymes, serve as a delivery system for carrying or encapsulating drugs or cytotoxic substances for targeted release, and provides a unique artificial organelle for cellular function control.