Beijing Chainan Chainsmap monitoring system found that after the 1547 BTC was stolen from the giant whale address, 5 small bitcoins of the same amount directly entered 5 different top-up addresses of HitBTC, and all were the first transactions of these addresses. The total amount is around 4BTC. Different from the process of entering the exchange through the intermediary mixed currency and over-the-counter trading, this kind of transaction involving bitcoin directly entering the exchange may become the best entry point for recourse. From the current point of view, about 267 stolen BTCs have entered the money laundering process, and the split is very fine. The entered exchanges and addresses are scattered. In theory, the market itself will not have a direct impact.