How to use Ps to make frosted glass penetration effect?

1. First use PHOTOSHOP to open the material picture

2. Duplicate the material layer

3. Blur layer 1 with Gaussian blur

4. Mask layer 1

5. Hide layer 1 and redraw the position you want to highlight on the background layer

6. Fill the selected area with black on layer 1 mask

7. Use a black brush to soften the mask area

8. Effect realization