Shoes can be customized. Generally, it is not expensive, ranging from 300,400 to 1500. Everything can be made from sandals to leather boots. A friend of mine has poor feet 1, and the store can only buy two pairs of two pairs. Then it was customized.
Here are two shops, you can have a look first.
Shanghai Changle Road 1238, near Huashan Road, Mr. Billy's Billy King Shoe Studio.
No.90-5, Longyi Shoes Workshop, Nanyang Road; 728 Anyuan Road