Hello, the original poster, in fact, it is very simple to dual-open. You don’t need any dual-open device. The simplest way is that you can go online and download a Sogou high-speed browser or 360 high-speed browser. There will be a "small browser" in it. "No. Window" button (look for it carefully), you can use this function to achieve double opening. The more complicated way is to open a sandbox, but if the sandbox is not registered, it can only be opened dually. If you want to open more than three accounts, you have to crack it, which is troublesome. So if the poster is afraid of trouble, just choose the first method! As for the download address, the author can just search "Sogou High-speed Browser" on Baidu, so I won't go into details here.

Hope to adopt!