1. Open Tik Tok APP, enter the personal center page, click the flash icon in the upper right corner, and select Settings in the pop-up menu.

2. Slide down to find the application and applet options, and then click Enter.

3. Locate the voice converter applet, and then click Add to Home. Go back to the home page, find the voice converter applet, and then click.

4. Enter the voice changer applet and select the tone sandhi option on the home page. After selecting, click the Use button at the bottom to realize tone sandhi.