Baidu map search content shows that there are 18 local pawn shops in Neijiang, and the search content of online comment platform shows that the only place in Neijiang to buy Bao Tong is Li Shengsheng's Bao Tong consignment business in Dongxing District, Neijiang.

Bao Tong refers to an ancient square hole, which belongs to the name of copper coins in the early and late Tang Dynasty. Now it belongs to a kind of Wan Wen Castle, which has high collection value and economic value.