ZHONG thereafter exchanged through an overseas cryptocurrency exchange all of the BCH Crime Proceeds for additional Bitcoin, amounting to approximately 3,500 Bitcoin of additional crime proceeds. Collectively, by the last quarter of 2017, ZHONG thus possessed approximately 53,500 Bitcoin of total crime proceeds (the “Crime Proceeds”).
As in every case where somebody gets busted, Zhong deanonymized himself by sending coin to an exchange. Exchanges are giant honeypots for the feds to use, because they are KYC touch points that serve to anchor the artifacts of their heuristical analysis (unproveable suspicion) into solidly identifying data. It's like when James Bourne shows up at the embassy with his real passport.