What can get through and what can't
Can your website get through?
The first step of the customer journey of your website?
It is important to use the Domain test to see if Chinese customers can see your website.
If the test comes up with "Blocked", with a red backing to it, then obviously you have a big issue trying to communicate and sell to Chinese consumers in mainland China.
It may not be very easy to change your domain servers, and in fact you may not need to go to all that trouble, because there are other, simpler solutions, e.g. create a WeChat Official Account and attach RCN WeChat Mall.