If you want to use WeChat voice reply on AppleWatch, you must meet two conditions. One is the latest WeChat version mentioned above, and the other is that the OS version on AppleWatch must be version 2.0.
Next, open WeChat on AppleWatch, enter the chat window with friends, and you can see the voice input reply button.
Then the voice recording interface will be displayed. When you finish what you want to say, click the stop button. After stopping, you can play back your own recording, or you can directly click the send button to send it to the other party.