No, the full English name of VPN is "virtual private network", which is translated as "virtual private network". As the name implies, a virtual private network can be understood as a virtual internal private line. Establishing a temporary secure connection through a public network (usually the Internet) is a safe and stable tunnel through a chaotic public network. Using this tunnel, data can be encrypted many times to achieve the purpose of safe use of the Internet. VPN technology used to be one of the important technologies of routers. At present, VPN function is also supported in switches, firewall devices or Windows 2000 software. In a word, the core of VPN is to establish a virtual private network by using public network. VPN mainly adopts tunnel technology, encryption technology, key management technology and user and device identity authentication technology.

If you can't understand the above paragraph, it doesn't matter, because it won't affect your use of it at all. You will know that VPN is a virtual private network. It does not need to lay physical lines. As long as you have a VPN account, you can freely connect anywhere in the world and realize remote interconnection with the help of Internet technology. So it will be safer, more professional and more free.