Wechat WeChat official account found "Guangzhou Public Security", click on "Government Services" (loading slowly and patiently), and find "Household Administration" in "Service Classification", which contains an item "Cancel Reservation". Click "Enter" in "Business Consultation Appointment", then you will be asked to enter your ID number, and then click the green "Query" below.
Be sure to cancel the appointment before the appointment time, or your personal reputation will be affected.