Make sure that you have obtained the permission to use SCF before implementing this sample.

1. Log in to the Tencent Cloud Console and select Cloud Product > Cloud Object Storage.
2. Select Bucket List on the left sidebar to enter the "Bucket List" page.
3. On the "Bucket List" page, click Create Bucket.
4. In the pop-up "Create Bucket" window, create the source COS bucket as follows:
   Set the name of the COS bucket as srcmr, select Mainland China > Beijing as the region, set the access permission to the default value of private read and write, and click OK to create the COS bucket.
5. Create the intermediate bucket middlestagebucket and target bucket destmr in the same way.