Xianggu City was the most central and prosperous city in the Demon Yan Kingdom. After ten thousand years of development, its surrounding areas had long since been transformed into an enormous industrial base.
The concentration of Spirit Veins, along with prolonged and effective cultivation and maintenance, had given rise to one "imperial estate" after another, "state estate," and manor belonging to powerful nobles and great aristocratic families.
Some of these estates specialized in all kinds of spirit tea, while others produced mid- to high-grade Spirit Rice. Naturally, the most valuable among them were the spirit herb gardens.
The Myriad Spirits Imperial Estate was a spirit herb garden under the royal family of the Southern Yan Demon Kingdom.
This imperial estate had a history of more than seven thousand years. Beneath it converged one mid-grade top-quality Spirit Vein and over a dozen high-grade Spirit Veins, with multiple Spirit Gathering Arrays laid out throughout. The spiritual energy within the estate was incomparably abundant; it could practically be considered a small blessed grotto-heaven.
On an annual average basis, the profits from cultivating spirit herbs were often inferior to those from growing Spirit Rice, raising Spirit Silkworms, and similar industries. They could even be less profitable than raising spirit poultry and spirit livestock for meat. Yet a spirit herb garden was a foundation that any ten-thousand-year aristocratic family had to possess.
For Xuanwu cultivators seeking rapid advancement, the most common and effective method was taking pills, and refining pills required spirit herbs.
As aristocratic families rose and fell generation after generation, the spirit herbs consumed every year amounted to an astronomical figure. If they relied entirely on purchases from outside, not only would it be unstable and unsustainable, but they could also easily have their throats seized by other families through supply and demand.