I need to print Packing List but Xin Doesn't have the Packing list.
There is a "Print DN" button on Invoice page where you can print your Delivery Note. You may change the template title to "Packing List" by creating your own Packing List template. Please refer to http://www.xininvoice.com/invoice-software-customize-invoice-template.html
Print Delivery Note in Xin Invoice 3.0.
If you need to have a separate Packing List module instead of print directly from Invoice, please download Xin Inventory 1.0 30 days free trial from http://www.xininventory.com. It has an independant Delivery Note module.