Hi White,
Thank you very much for your interest on Syncfusion products.
Exception occurs while saving the document :
The information which you have posted is not sufficient for reproducing the issue at our side, could you please update us with the following details
1.Syncfusion assembly version no, with which the issue is produced.
2.Excel format, which you have tried to save.(e.g.,2003,2007,2010).
3.Issue reproducing code snippet.
Using Chinese Font Names :
yes, it is possible to use the Chinese font name as in your post and also i have created a sample for the same with our latest assembly 8.1.0.30,Could you please get the sample and the assemblies from the below link and let us know if this helps you.
http://help.syncfusion.com/samples/XlsIO.Windows/93671.zipplease, let us know if you need more clarifications.
Regards,
Lokesh