Sometimes things are just that ironic: even though everyone knows Shireck is no longer the Shireck that often opposed the Great Tang Empire, many countries are still willing to purchase Shireck's products.
It's as if, by giving their money to Shireck, they are not giving it to the Great Tang Empire; in fact, buying Shireck's products is essentially purchasing products from the Great Tang Group.
The Dahua Empire also sent a procurement team to visit this expo: they weren't really planning on buying anything, as they were quite poor themselves.
Nevertheless, they were still willing to come and take a look, to get an understanding of the current direction of weapons development, as well as some technological applications in military hardware.
Fengjiang also sent representatives: they pretended to be very wealthy and bought a lot of military equipment from the Great Tang Empire.