Here's the main Ethereum wallet of Binance:
https://etherscan.io/address/0x3f5ce5fbfe3e9af3971dd833d26ba9b5c936f0be
And this, an anonymous Ethereum wallet that cross-trades between Binance, KuCoin and Gate.io. Just ETH going to Gate.io out of the Binance and KuCoin wallet... Who's wallet is this:
https://etherscan.io/address/0x6523a1744ab3901607db71c45c5fe624a2bcdf23
And here's one by which ETH flows the other way around, same story for tokens by the way:
https://etherscan.io/address/0xbf43c3cf81f8b16d6802c79bf527740183f8a93b
wash trade?
I refrain from the assumption this is related to Gate.io alone.