On July 19th, the trader utilized the Aave platform to borrow 500 MKR and sold them for 1.37 million USDC. This action demonstrated their precise prediction of market trends and decisive execution ability. However, the transaction did not end there. Just 16 hours later, facing market changes, the trader made another move, repurchasing the required MKR at a lower price of 1.07 million USDC, successfully completing the closing operation. Through this meticulously planned operation, he not only recovered his principal but also earned an additional profit of approximately $292,400. This case once again underscores the importance of proper risk management and accurate market analysis for achieving profitability in the cryptocurrency market.