With fire, houses, and clothes, the Human Tribe entered a period of rapid advancement and their population rose to a million humans in 100 years. But right at this time, another trouble awaited the Human Tribe.
The Human Tribe was too weak to fight against the Demon Tribe. Though Suiren-Shi, Youchao-Shi, and Ziyi-Shi were at the peak level of Zenith Heaven Golden Immortal, and they could be regarded as experts in today's Untainted Land, but they did not have transforming exercises or Magic Skills. So they could not display all their strength. They could handle ordinary Demon Tribe, but not the Sacred Demons at Reclam Zenith Heaven Golden Immortal.
In the 100 years, the Human Tribe summed up some transforming exercises which were shallow. The talented ones was simply at the Veridical Immortal Realm and their power was shabby compared with the Wu tribe.