1. First, read carefully the purchase agreement or contract signed with Nanjing Science and Education Hongxing to understand the refund terms.
2. Secondly, communicate with Nanjing Science and Education Hongxing, clearly express the refund request, and provide detailed contract and purchase information. Keep the exchange records of e-mails or written letters for future reference.
Finally, if Nanjing Science and Education Hongxing refuses to refund or does not make a reasonable solution, it can seek legal advice. You can consult local consumer protection organizations or seek the help of lawyers to understand the rights and interests and feasible legal channels.