1. Notary Office: You can entrust a notary office to inquire about the deceased ID card holder's will or heir list and other related information. You can consult the local notary office for specific operation procedures and expenses.
2. Government website: The Hong Kong government provides an online inquiry system called "Population Information Inquiry Service", which can inquire personal identity information, including name, ID number, date of birth, gender, marital status, etc. , but this information does not include the information of the heir. Inquiries need to register the account and pay a certain fee.