Website cannot be accessed by users in China

Hi there, we are having a website visit issue and it happended two days ago.

Problem description: website `www.asymchem.com` cannot be accessed by users in China. Users outside China access this webiste don't have problem.

The tracert stopped at: `162.158.164.2`, which is in the CA,US.

IP `162.158.164.2` belongs to Cloudflare.

Nslookup www.asymchem.com: `141.193.213.20`

Tried to access `141.193.213.20` from different ISP in China, the must pass through AS13335 and all failed in AS13335, which belongs to Cloudflare as well. 
If we traced the route to `141.193.213.20` from Taiwan, they did not it pass through AS13335 and it succeeded.

All the routes from China to `www.asymchem.com` must go through AS13335 first but failed. AS13335 belongs to Cloudflare. We guess the problem is in AS13335: routes original in China to `www.asymchem.com` is missing.

Please help. Thanks.

Ben
![lQLPKGTsO59fzRfNA7XNAvCwLgwCR7ntpekFiBg3KULMAA_752_949|396x500](upload://1G3ci56fEFPBCveDTmPGvHXNBeP.png)

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