Through precise control of the physical dimensions and structures of materials at the scale of 1-100 nm, quantum dots and micro/nano materials exhibit quantum confinement effect and novel surface/interface-dominated properties distinct from macroscopic materials, achieving technological breakthroughs in various fields and reshaping the foundational architectures of energy, information and biotechnology. In the field of ultra-high-definition display, quantum dots achieve >110% NTSC color gamut coverage and represent a core mass-production technology. In energy, quantum dots and micro/nano materials help solar cells surpass the theoretical efficiency limit of traditional single-junction batteries. In the biomedicine field, quantum dots enable multicolor imaging for single-molecule multi-target tracking, and stimuli-responsive micro/nano materials can perform targeted drug delivery. The ultra-high thermal conductivity of carbon nanomaterials solves the heat dissipation bottleneck in 5G chips. At the same time, they become key carriers for future technologies due to their unique one-dimensional/two-dimensional electronic transport characteristics and mechanical strength.