Wechat didn't open the screen advertisement. It only displays advertisements in the circle of friends and the official WeChat account, and does not jump out.
1. If you open the WeChat pop-up advertisement on your mobile phone, it may be that there is an advertising plug-in or software implanted in your mobile phone. Wechat itself has no advertisements, but it is also content shared by friends or others.
2. If an advertisement pop-up window appears when logging in on the computer WeChat client or WeChat webpage, it may be that some advertisement plug-ins or rogue software are implanted in the computer. Two situations: if you are very proficient in hardware equipment, you can find a list to see if there is any embedded software. If you are not particularly proficient in hardware, you can use anti-virus software or plug-in cleaning software to clean it up and see if there will be advertising pop-ups.