Although some papers can be found in Wanfang Database, there is no reading option, which may involve the following factors:

1. paid subscription: some papers may need to be paid to get reading permission. If you don't make the corresponding subscription or purchase operation, you can't view related papers.

2. Permission: Some papers may be set to be open only to specific institutions or groups, and other users cannot obtain reading permission.

3. Copyright of papers: Some papers may not belong to Wanfang database, so even if they are searched, they cannot be directly consulted in Wanfang database.

If you can't read it in Wanfang database, you can try to find other channels to obtain relevant papers, such as through other academic search engines or contacting the author for the original text. At the same time, it is recommended that you choose the corresponding subscription service according to your own needs when using Wanfang Database, so as to avoid unreadable situations.