1. Open the photo to be processed under Meitu Xiu Xiu software. Under the beautification menu, click the "matting pen-automatic matting" button, use the matting pen to cut out the legs of the people in the picture, and then click the "Finish matting" button to save the cut parts as customized jewelry materials for future use.

2. Click the "Eliminate Dark Eyecircles-Color Pen" button under the "Beauty" menu, adjust the size and transparency of the brush, and use the brush to eliminate the legs of the characters.

3. Click the "Customize" button under the "Accessories" menu, add the previously cut materials, adjust the size of the materials to 100%, lengthen the legs after putting them away, and merge the materials.

4. Click the "Face-lifting and Slimming-Partial Slimming" button under the "Beauty" menu, adjust the size and strength of the slimming pen, use the slimming pen to slim the legs of the characters, and then click the "Apply" button.

5. Return to the "Beautify" menu, click the "Portrait" category, and select the "Natural Beauty" special effect with 70% transparency and the "Delay" special effect with 30% transparency.

6. Finally, click the "basic" classification, select the "smart color painting" special effect with a transparency of 75% and the "sharpening" special effect with a transparency of 50%, appropriately beautify the color tone and make it clear, and you're done.