Sun Jianguo opened a pack of Hongta Mountain cigarettes and handed one to Zhang Erhe.
The other took the cigarette and offered Sun Jianguo a light: "Uncle, I think there's no need to go to the Old Street, there's hardly anyone there, maybe less than a hundred people including my dad?"
Although Sun Jianguo later moved out of the Old Street, Zhang Erhe's father still lived in the old house.
Some of Sun Jianguo's relatives and childhood friends who grew up with him are still in the Old Street.
So, even though he moved out of the Old Street, Sun Jianguo still often returns, being more familiar with that place than his current neighborhood.
"There should be no problems, but Erhe, you have to remember, solving a case doesn't mean not checking acquaintances. The superior's requirement is that every household on Northern Avenue should be thoroughly checked."
