Despite its reputation as an economic powerhouse, the citizens of China face significant censorship on behalf of government while browsing the internet.  Services like WhatsApp, Facebook and even YouTube are inaccessible in China. The Great Firewall of China is real and restrict its residents to access some their favorite websites. Also if you are a foreigner visiting China for work or to spend vacations then you will face the same restrictions. But using a VPN provides you freedom of using internet and avoid censorship in China.