In Xixia District of Yinchuan City, some shops can buy mother-in-law clothes suitable for wedding occasions. For example, China Hengsheng Clothing Store, located in Jinfeng Road, Xixia District, Yinchuan City, specializes in Chinese wedding dresses, including cheongsam and robes. Yazhixuan Clothing Store is located in Ningdong Road, Xixia District, Yinchuan City. It also specializes in wedding dresses in China, and also provides cheongsam and robes. Ruili Wedding Shop is located in Hongxiang Avenue, jinfeng district City, Yinchuan City, and also provides Chinese cheongsam, robes and other wedding styles.

The above are only suggestions, and you may need to choose according to the actual situation and needs. If you need more detailed information or have other questions, please feel free to ask.