No, the data will not be lost after the COS (Cloud Object Storage) resource package expires. COS provides a stable data storage solution where your data remains intact even if the associated resource package or billing period expires. However, you might face service limitations or reduced performance until you renew or upgrade your package.
For instance, if your COS storage bucket is part of an expired package, you can still access your data, but you might not be able to upload new data or perform certain operations until the package is renewed.
To avoid any disruptions, it's advisable to monitor your resource usage and renew your COS package before it expires. If you're looking for a reliable cloud storage solution, consider services like Tencent Cloud's COS, which offers persistent data storage with high availability and durability.