In the vast desert of Yu State, human presence is sparse, and even in years of great famine and rampant banditry, not many people make their way to this place.
To return to the border of Great Chu, one must cross the vast and boundless desert and Gobi.
The teleportation portal opened by the Fire Master was intentionally located in the most desolate part of the desert, to avoid detection by Nalan Xuance's "Iron Curtain." Although it was only two hundred li (approximately 62 miles) from Qu River, the journey was exceedingly difficult.
Xie Xuanyi walked for four straight hours without rest.
Deng Baiyi had already reached Foundation Establishment, and for her, traversing the desert was not a difficult task, especially with the protection of the "Tao Realm," sheltering her from intense sun and fierce winds. These four hours were merely tedious, not arduous.