1. First open the material file with ps, select the rectangular marquee tool on the left, as shown in the figure below, and then go to the next step.
2. Secondly, after completing the above steps, use the rectangular box selection tool to select the watermark, as shown in the figure below, and then go to the next step.
3. Then, after completing the above steps, right-click to display the menu, select the fill option, as shown in the figure below, and then enter the next step.
4. Then, after completing the above steps, select the content identifier in the filling options, as shown in the figure below, and then enter the next step.
5. Then, click OK to remove the watermark, as shown in the figure below, and then proceed to the next step.
6. Finally, click the file and select "Save", as shown in the following figure. In this way, the problem is solved.