1. Find experts in your field through search engines or online catalogs. For example, if you enter keywords in Google Academic or Baidu Academic, you can find many experts' articles and research results.
2. Use professional associations and organizations, which usually have a list of expert members and contact information. You can find the websites of relevant organizations or contact them for more information.
3. Use professional social media platforms, such as LinkedIn or Xing. There are many professionals and experts on these platforms. You can search for experts by searching for keywords or joining related groups.
4. Refer to relevant books, papers or reports. The authors of these documents are usually professionals with rich experience in this field.
Please note that after finding experts, it is best to know their background and research direction first, and ensure that their professional fields are relevant to your question. In addition, if you need face-to-face consultation, it is best to make an appointment in advance or send an email to get the attention and reply of experts.