Can websites frequently visited by Hong Kong people be visited in China?

Because of the problem of network control, many websites that can be accessed in Hong Kong cannot be directly opened in China.

Hong Kong itself is relatively open and its laws are relatively loose. For example, pornography-related content is not restricted on the Internet in Hong Kong. Most websites put a warning slogan on the home page at most, reminding that 18 years old can't browse the website. But in China, these websites are illegal.