The correct way to deal with this is silence. By itself, this is just an Internet accusation, nothing else.
An Internet accusation cannot by itself sustain controversy. Controversy requires adding fuel to the fire. If there's no fuel, the fire burns out and people lose interest. So no weird awkward e-mails. Just don't respond.
Now the Anglos will constantly ask, "Where is X?" Imo this strategy is ineffective propaganda. Because nobody cares about "X." And after a few months, everybody forgets about "X."
So the correct response is simply to ignore questions about "Where is X?" If directly questioned, say that you don't know where a random person out of 1.4 billion people is. Then point out that the Anglos always ask "Where is Random Chinese Person Y?" every few months. You're not their personal stalking service, and you're not going to stalk "Random Chinese Person X/Y/Z/A/B/C" every two or three months just to appease their New Cold War propaganda machine.