1. Stay calm: First, stay calm and don't panic or overreact.

2. Don't distribute: Don't distribute money to others, so as not to mislead others or spread cult information.

3. Store separately: Store money separately from other coins to avoid mixing with normal money.

4. Consulting professional institutions: You can consult local banking institutions for professional opinions and suggestions.

5. Destroy or hand over: According to local laws and regulations, you can choose to destroy or hand over these coins to relevant institutions, such as banks or police stations.