"Nine Thousand Years?" Gu Chen's sword-like eyebrows raised slightly; he had never heard of this type of spiritual medicine before.
Seeing his reaction, the emperor of summer explained to him, "Nine Thousand Years is not the actual name of this spiritual herb; it is called so because it is a herb with an age of more than nine thousand years. It is only a step away from ten thousand years, and hence it was named Nine Thousand Years."
"Nine thousand years of medicinal age?!" Gu Chen's expression shook, somewhat surprised.
Heavenly materials and precious treasures like spiritual herbs undergo a transformation once they exceed a thousand years, akin to a martial artist's breakthrough into the Cave Heaven Realm.
If one could break through the ten-thousand-year threshold, it would naturally be like an Earth realm cultivator breaking through to the Sky realm—the difference between them is immeasurable!