You can try the following four common methods to switch to Chinese mode:
First, after the Bluetooth headset is turned on, press the volume button at the same time to switch the language of the Bluetooth headset in Chinese and English.
Second, turn off the Bluetooth of the phone, and then enter the pairing mode, click or double click the multi-function key or pause key.
Third, when entering the pairing mode, double-click the volume button, hear a beep, it means that the successful switch between Chinese and English. Fourth, if the volume key of the Bluetooth headset is sliding, you need to press the sliding key inside twice.