How does the mobile phone version of Xiu Xiu make its head bigger?

Meitu Xiu Xiu's way to make his head bigger:

Enlarging the head of a photo can be done by ps software. Select the head with the lasso tool, and then press ctrl+T to zoom at will. Hold down shift when zooming in, which means zooming in proportionally, without distorting the image.

Or use the liquefaction function in ps filter, choose to enlarge the head of the picture, and click the mouse to enlarge the head. Meitu Xiu Xiu is an image processing software launched by Xiamen Meitu Net Technology Co., Ltd. in 2008.

Meitu Xiu Xiu, aiming at mobile phone photography, has the functions of picture special effects and portrait beauty, and can provide users with professional and intelligent photo retouching services. Compared with professional photo processing software, its operation and procedures are relatively simple, allowing users to process photos in a short time.