How do you know? I see literally zero direct evidence for this in the linked post -- only that some people in China responded. Not everybody in China is working for the government.
When analogous statements are found offensive in the US, US citizens, US tech companies, and the US media can act with astonishing speed and coordination to stamp them out. That doesn't mean that the US government is directing all of it.
When analogous statements are found offensive in the US, US citizens, US tech companies, and the US media can act with astonishing speed and coordination to stamp them out. That doesn't mean that the US government is directing all of it.