Complete the Form from the link I cited above:
https://china.usembassy-china.org.cn/visas/immigrant-visas/contact-us/
How to Contact Us
For other questions, please direct your inquiry to the U.S. Consulate General Guangzhou Immigrant Visa Unit using the email form below.
Email: Please use our Immigrant Visa Unit Inquiry Form to contact the Immigrant Visa Unit by email. Emails are answered in the order received. E-mail inquiries submitted using this form are typically replied to within 5 business days. Please note that during major Chinese holidays such as Chinese New Year and Chinese National Day the Consulate may require a few extra days to respond. We appreciate your patience and understanding.
