Kms key id support for RDS china

Dear Sir/Madam,
I am using the terraform version 1.1.4 and provider(aws) version 4.27
I would like to use the customer managed key(CMK) to rds instance, but it always assigns the AMK(Amazon Managed Key ) instead of CMK. This issue happens only in China region.
Are there any terraform issue or terraform provider issue for this problem?
I have also tried to use the terraform version v4.50, but had no luck!
Could you please help me here?