Can someone give me info on these chinese port scanners?

Looked up the IP address thats buttfucking my sytem,some poor peeps from china.Now that I have their IP address,is there anything I can do to protect myself?

What is a VPN?

VPN is (Virtual Private Network) were first used by companies to enable their employees to securely access internal systems such as email remotely (e.g. from home or while on business trips). Today they are increasingly being used for personal use by individuals to protect their privacy while online in public places (e.g. when using the wi-fi connection in a cafe) or in a country where the internet is censored / blocked (e.g. China, Saudi Arabia��).