In Hong Kong China Mobile, an Internet service provider, disconnection (the so-called hang-up action) indicates direct intervention by the telecommunications company. Mr. April said: “The delete action is a specially configured element in the DNS firewall environment.” “This is not something that the owner has intentionally or unintentionally configured.”
China Mobile Hong Kong, a subsidiary of Chinese state-owned China Mobile, declined to comment. SmarTone and Hutchison Telecommunications, which are controlled by a local conglomerate, are the other two companies tested by the New York Times and did not respond to emailed requests for comment.
At first glance, the website’s blockade is similar to mainland China’s censorship system, but the method is very different from China’s complex system.
Through China Mobile, SmarTone and Hutchison, the process of linking the website address to a series of numbers that the computer used to look up was broken. This approach is similar to using someone’s name in the phone book to list incorrect numbers. If you know the correct number of the other party, you can still call them.
In contrast, in mainland China, the hardware that serves as the “long firewall” of Beijing’s filter and blocker system is actively cutting connections. In the phone book comparison, even if you have the correct phone number, the call will not go through.
Professor Xu said that the Hong Kong blockade is “very easy to circumvent and clumsy”. He said that despite this, the authorities are still reluctant to control the Internet as closely as Beijing, because it fears that it will intimidate global banks and international companies that use the city as their Asian headquarters.