I heard some news about the cause of Ethereum coming down, I heard there was a group of people who deliberately sold 200,000 Ethereum to make Ethereun weakened, I didn't know the truth of this news but such manipulations were common in trading, I also heard that investors were angry at Ethereum and Vitalik , I do not know what problems make investors disappointed, I feel the news about the sale of 200,000 ethereum carried out by a group of people because of disappointment with Ethereum.