The southern city of Nanjiao in the Orc Empire, a city that has recently become very prosperous, thanks to its free trade with humans. Originally a tribe, it has now evolved into a city, an Orc city where humans can be seen everywhere.
Here, humans are protected, and a large number of them work here; although conditions may be a bit tough, the possibility of earning more money is too tempting to pass up.
Desperately in need of a variety of technical talents, the Orcs are willing to pay a substantial amount of gold and gems to attract these experts, to bring their skills over, to stay...
Compared with those nations that are able to send their nephews or trusted insiders, or even go in person, to the Great Tang Empire to learn, the Orc Empire is at a natural disadvantage.
In the Great Tang Empire, orcs can be seen frequently, but these ugly, unfortunate creatures are all slaves, laborers, and are not free to move about.