First step is Preliminary Preparation for PCB componets libray and schematic diagram.

it refers to the phase in the PCB design process where planning and design are conducted for the board's physical form, mechanical characteristics,

Arrange components by functional modules, prioritize placing core chips (such as CPU, GPU), and ensure the shortest high-frequency signal paths.

After routing is completed, the silkscreen should avoid traces, pads, and vias, and be reasonably positioned in blank areas.

PCB prototyping: Submit design files (Gerber files, drilling files, etc.) to PCB manufacturers to produce a small number of samples