The big gold shop in Weifang is probably Xinyuan Jin Dian, with many branches. I suggest you go to the head office of Houmen Street, Weizhou Road. Bus No.56 on the left side of the general railway station goes to the intersection of Dongfeng Street and Weizhou, heading south and east 100 meters. Or bus no.5, bus no. 1. I should be able to do it. If not, there should be no gold shop in Weifang.