Because he was very surprised and annoyed that Masao Yamashita was so relieved to let him go out alone, and he also couldn't decide whether he should go see Old Zhang right away or not. Although according to Lao Zhang's signal in the newspaper, now was the exact time that Lao Zhang was waiting for him to go to a meeting at a certain location. ,Conducting a smuggling investigation of that type is completely unnecessary. On the contrary, it will cause the Chinese army across the river to be wary of this section of the riverbank, in case the Chinese army also sends people to sneak across the river to investigate. Consider, even from this large stretch of riverbank, randomly find a position to sneak attack. He really wasn't sure he could find out in time.