Huaining County might be a bit far, and brother-in-law is meticulous in his ways. It might be better to have brother-in-law help investigate.
After the letter was written, Su Xinyi sealed it and had Zhan Qiao send it to the Qi Country Duke's Mansion, from where it would be delivered to Su Bai Wei in Pingning Guard by someone from the Su Family.
Although they only knew the name of the shopkeeper, and this clue was really too slim, there were no more leads at the moment, so they had no choice but to trouble Jie Jinglue, the brother-in-law.
Having attended to all her affairs, Su Xinyi let out a soft sigh of relief, not anticipating that matters would become so troublesome.
She hadn't expected Xu Yurong to be so capable of stirring up trouble. She had thought that after the divorce from Shu Xuebo, Xu Yurong would have settled down, but it turned out Xu Yurong was quite capable, and it was unclear how she had become involved in this matter.