Lin Qian and Ye Xin were now strong Soul Martial Artists at the Transcendence Realm, and their speed flying towards the front was naturally extremely fast.
In the blink of an eye, the two had already arrived at the cave entrance to the underground world.
The Muling underground world, named after the Muling Clan, had been the dwelling place of the Muling Clan ever since the Ancient War.
As a Lower-class Race, the Muling Clan was always dominated by the Wind Swift Clan, living in the underground world and tending to the vast and expansive medicinal fields.
Moreover, to harvest more Spiritual Medicine, the Muling Clan, under the rule of the Wind Swift Clan, spent all day tending to the Spiritual Medicine, with no days of rest whatsoever.
Year after year, day after day of cultivating Spiritual Medicine without any break hugely exhausted the land, leading to the increasingly scarce harvest of Spiritual Medicine in the Muling underground world.