When I save a document with Chinese content to PDF on Windows 10, the generated PDF has empty text content (fonts are missing).
However on the same machine and same code, the generated XPS (or other formats like images), the Chinese text is visible.
Strangely if I run it on Windows Server 2016, the generated PDF has the text visible and have the fonts embedded.
The question is how XPS can find and substitute fonts on Windows 10 but not PDF? I understand that they removed some fonts on Windows 10 English default installation (docs.microsoft.com/en-us/windows/deployment/windows-10-missing-fonts), however there seems to be problem with PDF font substitution in Spire.PDF because saving as other formats (XPS, image, html) work on the same machine?
Sample DOC with chinese font and generated PDF and XPS are attached.
By the way this is with latest Spire.Doc 6.3.5