Upstairs, at stall No. 126, which sells familiar, brown-on-brown handbags labelled “Gochi,” Cai Shumin said that Old Bush had walked past her stall on the way to the high-end pearl shops on the fourth floor. He had passed by a large ad for Sharon’s Store, which features a photograph of a tiny Chinese woman standing next to an enormous Bill Clinton. In the picture, Clinton wears a bright-red “Stanford Dad” T-shirt, along with a tired expression common among people who don’t realize that they are about to appear in advertisements.