There were people who knew both Jian Qingqing and Jian Qingqing. One of them was a widow's daughter who lived in a lower river village. Her family was poor and did not seem to have the ability to do so.
As for the other Jian Qingqing, everyone knew her. She was the owner of the Jian's Food Shop, Jian Qingqing. Most people in the county had gone to her food shop to buy food. Even if they had not eaten before, they must have heard of the name of the Jian's Food Shop and Jian Qingqing's name.
Most importantly, the owner of the Jian's Food Shop, Jian Qingqing, was familiar with the county magistrate of Shifeng County. They seemed to have a very good relationship. There were often people who saw Jian Qingqing going in and out of the county office.
Those who knew the officials were definitely not simple people. Therefore, everyone unanimously believed that the owner of Jian's Food Shop, Jian Qingqing, was the one who invented fine salt.
