You'll get these for every domain you register, and they can be safely ignored.
Getting your .com.cn domain wasn't a priority yesterday, so why would you waste even a second considering it today? You registered the .com, and the .net/.org if they were available because that's good practice. Maybe a few popular misspellings too if they're available.
But there are 500 other TLDs out there that you didn't register. For good reason. Because they're worthless.
Some random email out of the blue doesn't change that fact.
Getting your .com.cn domain wasn't a priority yesterday, so why would you waste even a second considering it today? You registered the .com, and the .net/.org if they were available because that's good practice. Maybe a few popular misspellings too if they're available.
But there are 500 other TLDs out there that you didn't register. For good reason. Because they're worthless.
Some random email out of the blue doesn't change that fact.