Enumivo wrote on his twitter:
‏
"@EnuMivo
 5h5 hours ago
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can anyone help me? @chuyuchien1 accidentally sent 9 eth from a chinese exchange (i don't understand chinese), but so far i'm convinced that it was indeed him, however, i don't want to return it unless i'm really sure."


The solution is very easy to verify if @chuyuchien1 is the 9 eth sender. You can privately ask @chuyuchien1 resend a very small and specific amount of ETH (for example, 0.0001211 ETH) from his exchange address to your wallet. If the amount you received matches the amount you told him, then he is the 9 ETH person.

Easy? It's time for you to verify your project is not scammer.