words source code：
src.zip (4.8 KB)
origin doc:
供应链资源看板管理.doc.zip (109.3 KB)
before converted：
after converted：
Please have a check.
@hucq_landray_com_cn Unfortunately, I cannot reproduce the problem using the latest 23.1 version of Aspose.Words for Java. From your source code it is seen that you are using some old version of Aspose.Words, since FontSettings.setDefaultFontName has been deprecated a while ago and is moved to FontSettings.getSubstitutionSettings().getDefaultFontSubstitution().setDefaultFontName.
Please try using the latest version of Aspose.Words for java and let us know if the problem still persist on your side.