You can just approach ICA Citizens Service Centre at ICA Building to transfer the ROE stamp on your child’s old Chinese passport to the new one.
Required Documents
Both old and new Chinese passport of SC minor;
Singapore Citizenship Certificate;
The requesting parent’s NRIC;
Letter of Authorisation to a proxy if you are unable to go back to Singapore;
Proxy’s NRIC.
Processing Time:
About 15 to 20 minutes (depending on the crowd).