Tik Tok Blue Line Challenge: First, open Tik Tok on your mobile phone, click the search function on the upper right, search for "Blue Line Challenge" and click Use this special effect, then click the photo album on the lower right to find the avatar that needs blue line challenge, and finally click Shoot.

As a way for users to relax, Tik Tok platform has become the first pleasure of shooting videos, and the "Blue Line Challenge" special effect launched by Tik Tok is also very popular. A friend saw the video of the Blue Line Challenge and found it interesting to co-shoot, but he didn't know how to add an avatar, so Bian Xiao shared the shooting method. I hope Bian Xiao's method can help you.