I need to transfer my artifacts (zips and container images) stored in GCP us-west1 region on Cloud Storage and container registry to AWS China region S3 bucket and ECR.

Solution I found shows transfer of data from AWS non-China Account to AWS China account.

My question is :

• Can I directly transfer artifacts using above solution (in link) from GCP to AWS (China) or do I have to transfer artifacts from GCP -> AWS (non-China) -> AWS (China)
• Can the solution in link be implemented for any cloud or this is valid only for AWS ?