How to make a slogan on the picture inserted by Word or PPT in version 20 13, such as drawing a circle next to the picture, and then adding some words to explain what?

Just insert a picture-insert an optional graphic, select the ellipse tool, and then double-click the circle. Under the Format Optional Graphics _ Dimensions tab, adjust the length and width of the graphic to the appropriate position, and edit the title in the graphic.

Then set the layout of the picture to float above the text and set the fill color to None.

Then move the set circle to the middle of your four pictures.

I wish you success!