How to Download the object such as AMI from Seoul EC2 instance to an intermediate host such as an Beijing EC2 instance?

Hello, I'm assuming that you already have an AMI that you created from your EC2, if not, this documentation explains how to create AMI from EC2 : [https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/creating-an-ami-ebs.html]

And, if you are trying to copy an AMI from an AWS region to another AWS region, you can see this blog useful : [https://aws.amazon.com/premiumsupport/knowledge-center/copy-ami-region/].