Why do multiple VAT invoices map to a Golden Tax transaction?

The original transaction had one or more items with a long item description.

When you export Golden Tax transactions, the item descriptions in any invoice line can't be more than 14 characters long (Chinese characters). The VAT invoicing application considers this limit to split invoice lines. If the description exceeds this limit, the invoice line is split into two or more lines. Sometimes, the number of these new lines exceeds the maximum number of lines for a VAT invoice. In such cases, the invoice is split into two or more.

The entire description shows up as the item name on a split invoice. You can see this when you import the VAT invoices from the invoicing application into the Golden Tax Adaptor.