When Cheng Qianfan took the tram at that time, Lao Liao pretended to get on the tram. The two would have contact at this moment, secretly and quickly completing the transmission of information or items.,Shanghai newspapers once used an exaggerated headline to describe the difficulty of taking the tram: "Charging into battle to take the tram".,“This old man seems to be daydreaming.” Wang Kangnian put down the telescope and pondered for a moment, “What is he thinking about”。