Turn on automatic reply on the WeChat public platform. According to the query of WeChat App, first open the login WeChat public platform, find and click "Auto Reply", and then click "Auto Reply". Then click "Keyword Reply", click "Add Reply", enter your own rule name, select keyword matching method, enter keywords, add reply content, click "OK", select reply method, click "Save", click "Received Message Reply", enter reply content and click "Save". Finally, click "Pay attention to reply", enter the reply content and click.