英文回答:
    How to Obtain a Single Child Certificate Online.
招行信用卡申请进度    Step 1: Visit the Official Website.
    Navigate to the official website of the Chinese government or the relevant provincial/city government.
    Search for the "Single Child Certificate" or "Birth Certificate for Single Child" section.
    Step 2: Register or Log In.
    If you are a new user, you will need to register an account with your personal information.
    Provide details such as your name, identification number, and contact information.
    If you have an existing account, log in with your credentials.
    Step 3: Submit the Application Form.
    Click on the "Apply for Single Child Certificate" button.
    Fill out the application form accurately, including details such as:
        Applicant's name and identification number.
        Parent's names and identification numbers.
        Birth date and place.
        Contact information.
    Step 4: Upload Supporting Documents.
    Scan and upload the required supporting documents, which may include:
        Identity card or passport.
        Household registration book.
        Marriage certificate.
        Child's birth certificate or passport.
    Step 5: Pay the Fees.
    The website will provide information on the applicable fees for obtaining the certificate.
    Make the payment online using the available options, such as credit card or online banking.
    Step 6: Track the Application Status.
    You can track the progress of your application by logging into your account.
    The website will provide updates on the status of your application.
    Step 7: Receive the Certificate.