You have no idea what you're talking about.
The search can still be performed, but it is China — NOT Google — that is doing the censoring by interfering with queries which contain offending terms.
Before, if someone in mainland China performed a search containing an offending term, equipment that is part of the so-called "Great Firewall" would interfere with the search, making it appear that the search results page was unavailable or resetting the browser's connection, and then making Google unavailable to the user for a period.
Now, Google is warning you that will happen based on observations of which search terms resulted in China's filters blocking the search results.
Why are there so many ignorant comments on this post claiming that it's "Google" the one doing the blocking? They're not.