Preparation:
Old PS4 (Malaysian account, non-mainland China version)
PS5 (new machine without account, Mainland China version)
Connect PS4 and PS5 together via wifi or a network cable on the same network.
Method:
Step one: Register a PS account on PS5 or PS mainland official website. And real-name authentication.
Step 2: Log in to your Malaysian account on PS4.
Step 3: Log in to the Mainland China account registered in Step 1 on PS4 (there should be two or more accounts in PS4 at this time)
Step 4: Initialize PS5, re-enter the loading interface, and log in to the mainland account registered in the first step on the login account page.
Step 5: At this time, the system will prompt you that this account has data on PS4. Do you want to transfer it? Select Yes. You will be prompted here for all accounts registered on PS4.
Step 6: Select the Malaysian account and then transfer.
Just wait for the transfer to complete