Can I apply for a departure certificate online in Xinzhou?

Just apply directly to your community.

Eligible personnel apply to the community (village) where they are located, and the community (village) conducts a preliminary examination, and the street office (town) issues a certificate of leaving the city after examination and approval. The development zone of the unmanaged street office (town) shall be audited by the development zone headquarters and issued with the certificate of leaving the city.