After more thought, Zhao Yu finally came to a conclusion that was contrary to his previous one. He believed that the real purpose of the mysterious man was not actually to rescue Jiang Ke. What the mysterious man really wanted to do was to either kill Jiang Ke or capture him alive!
Zhao Yu finally figured out that on the bridge, the mysterious man did not want to spare Jiang Ke. However, if Jiang Ke and Zhao Yu had been blown up together, it would be harmful to the mysterious man's plan!
Jiang Ke had just escaped from prison with Zhao Yu's help. If he had been killed on the bridge with Zhao Yu, the police would have investigated the cause of their deaths. Because of that, the mysterious man would fall under suspicion and become the target of the police investigation. But, if the bomb just killed Zhao Yu, the police would believe that Zhao Yu was killed by Jiang Ke. Then Jiang Ke would fall under suspicion.