One of the places mentioned by Nie Li in his questions to Shen Xiu about people and places outside of Glory City. She had heard of it but never seen it. The desert lies beyond the St. Ancestral Mountain to the east.
As its name suggests, it is a boundless desert with endless dunes of yellow sand. When the high winds blow, the ever-present sands would slowly envelope the entire region in a yellow veil. The environment here is extremely harsh and demon beasts would appear from time to time, making the region very dangerous.
After Nie Li and his friends completed the Lord of Nether's Disciple Selection they had three months before heading to the Draconic Ruins Realm. Before leaving the Divine Continent Nie Li was determined to reclaim his treasured Temporal Demon Spirit Book. However, after traveling to the Endless Desert in this life, Nie Li discovered the desert palace in ruins and no clues to the Temporal Demon Spirit Book's location.
It was here that Nie Li, Ye Ziyun, and the other survivors of Glory City escaped after the demon beast attack. This is also where Ye Ziyun ended up dying. After finding the desert palace, Nie Li discovered the Temporal Demon Spirit Book.