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.,Then, if Lao Liao chooses to wait for the next train at his current location, it means everything is normal and there hasn't been any urgent notification from superiors, so things remain as usual.,This location is good, with a great view and easy observation.。