The Great Jin isn't like the Heavenly South Region where there are many different countries and clans, but rather, a single powerful imperial court has ruled over the Great Jin's mortal world since ancient times. No matter how powerful a cultivator may be, they don't dare to harm mortal affairs, or else other sects and powers will use this opportunity as a pretext to move against them. As a result, the Great Jin court had reached a compromise with many of the great powers in the cultivation world. The agreement would dictate that the powers or sects wouldn't pressure or interfere with the mortal imperial court, and would even allow the imperial court to directly hire a few vagrant cultivators in order to preserve the prestige of the court. Of course, the Great Jin imperial family can also nurture a certain number of their own cultivators, but the great sects keep a close eye on them to make sure they don't get carried away. Interfering with the mortal world can be considered quite ordinary and it isn't a disgrace to interact with high ranking government officials and the wealthy.
The Great Jin span across a great amount of land, but the mortals living there exist in far greater density than in the Heavenly South. As a result, there are fewer desolate areas, and spirit medicines and spirit stones often found themselves in the hands of mortals. This is different in the Heavenly South, where mortals occupy far less land and there is much more wilderness.
The noble clans of the Great Jin were much larger. In the Heavenly South Region, cultivation clans had late Core Formation stage cultivators within their ranks at most and weren't capable of producing a Nascent Soul cultivator.
In Jin Empire existed various Buddhist Sects, Confucian Sects and Daoist Sects.
The Great Jin was bordered by other unsavory civilizations in the southeast and northwest and that mortal natives would often wage war with them. The eight great generals controlled a majority of the military strength in the empire. Each of them commanded armies numbering in the millions, protecting the cities at the frontier with hardened elites.