2. in the new interface, as shown by the red arrow in the figure, find "sound and vibration" and click to enter the new interface.
3. as shown by the red arrow in the figure, find "incoming call ringtone" in the new interface and click to enter the new interface.
4. as shown by the red arrow in the figure, find "select local music" in the new interface and click to enter the new interface.
5. Find the Zen music "Ask Buddha" of Guzheng and Dizi in the new interface, and then click the circle in the red box, and the background of the selected circle will be displayed in blue. In this way, "Ask Buddha" is set as a ringtone.