For the sake of the tribesmen, Xuanyuan encouraged the Human Tribe to dig up the wasteland in case of need for boosting food production. After all, natural disasters often occurred in the Untainted Land. Although Fuxi had invented the Eight Trigrams of divination to predict how things would be going, not all tribes could use it well and prepare for the natural disasters.
The Human Tribe's life got better after decades of development. They all reserved surplus goods and used them to exchange other goods they wanted. But the gap between the prices of different goods was a big problem. They sometimes had to give up the exchange because of the price gap. This oversimple method of exchanging goods failed to satisfy the Human Tribe's requirements.
