Is there anything specific?

If you want to open multiple instances of Google Chrome, say seven or eight accounts, copy the original Chrome browser icon from your desktop and rename it by right-clicking, for example: Chrome001. Then click on properties, and there is a target field T; at the end, input the code: -user-data-dir="D:\Chrome001" with a space at the beginning. After completing this, save it, and when you open the browser, it will be a new window! This is an independent environment. It is essentially another browser. The way to avoid buying IP addresses is to use it freely.