For reference, it turns out that it can be done in one step. Use FastStone? Image? Viewer software, find the folder where the picture is located, select the photo with the date to be modified, right-click the tool to modify the timestamp of the selected picture, and then a modification interface will appear. In the top bar of the modify interface, select? Change the shooting time in the exif parameter of the photo, and then three options will appear below, as shown in the figure.

Choose a specified time and change it to what you want ~ ~ ~