1. Documents (evidence) need to be prepared: shopping invoices (or receipts, receipts. If there are none, negotiate first, and still cannot succeed, ask an insider to provide a witness statement>, remaining milk powder, hospital diagnosis certificate and Medical bills and transportation bills to the hospital.

2. Complain to the Industrial and Commercial Bureau and ask them to seize the problematic milk powder on site and wait for the outcome.

3. To no avail. The store was sued in court, and Shengyuan Company was named as the co-defendant (due to the store's financial strength, it was difficult to pay compensation).

I wish you success in safeguarding your rights!