Jin Dynasty

Jin Dynasty. 

While almost every large faction from the great sects and three dynasties had their hands in the business of rearing cultivators and resources in the stellar worlds of the main plane, it was the Jin Dynasty that took things to the extreme. 

With thousands of stellar worlds pooling resources into the dynasty, they were able to establish military schools not unlike actual sects with the excuse of training their young soldiers. No dynasty would conscript millions of citizens into the army, especially citizens of the Core Mainland. 

However, human trafficking from the stellar worlds to the Core Mainland wasn't an issue, albeit the transfer costs were very expensive. Oftentimes, the gains don't make up for the losses. 

Nonetheless, with this practice persisting for millions of years since the founding of the Jin Dynasty, the scales slowly began to shift as the early investments are now paying off.