Chinese popular social media and search websites have begun to censor cryptocurrency-related advertising, while the national authorities allegedly decided to block access to foreign trading platforms.

The Chinese search engine Baidu and microblogging platform Weibo do not show any sponsored materials related to cryptocurrencies. Searches for terms such as “cryptocurrency”, “Bitcoin”, and “ICO” do not show sponsored posts or paid advertisements.

Weibo confirmed that they do not allow cryptocurrency-related advertisements.

This information was followed by reports that Chinese authorities went as far as enlisting bitcoin-related trading platforms in the so-called Great Firewall of China, thus blocking access to the site of such services for everyone in mainland China. 

“Overseas transactions and regulatory evasion have resumed. Risks are still there, fueled by the illegal issuance, and even fraud and pyramid selling,” said an article published Sunday night by the People’s Bank of China-affiliated Financial News.

Earlier, Facebook announced a ban on advertisements for "binary options, initial coin offerings, and cryptocurrency." The decision is due to the Facebook's intention to prohibit ads of financial services and products "that are frequently associated with misleading or deceptive promotional practices."