Hi, you will find many Lanzhou Beef Noodles restaurants within walking distance from 938 Hunan Lu. They often have the name of '兰州正宗牛肉拉面馆'. You may find halal food there. There is no mosque within walking distance from 938 Hunan Lu. The nearest may be Shanghai Pudong Mosque at 375 Yuanshen Lu,, Century Park, near Shangcheng Lu. It is about 6km away from 938 Hunan Lu. The nearest mosque to the expo site may be the one at 52 Xiaotaoyuan Jie Huangpu District.