① Right-click the solid of the model-select all surfaces.

(If you just want to select a part, just click that part! )

② In the lower right corner of the interface-Attribute Editor-Material-Type-select the material you want.

③ Interface toolbar-Rendering-Synchronous Rendering to see the overall effect-Click Stop Rendering after confirmation, and then click Final Rendering to wait for drawing.

(The rendering speed is generally slow, so it is recommended to adjust the pose and clothing of the model before the final rendering. )