The journey of over eight thousand li would take the Demon Dragon just under two hours of uninterrupted full-speed flight.
This flying speed was already around fifty percent faster than when the Demon Dragon had yet to grow wings, reaching nearly one thousand kilometers per hour.
Such extreme speed was even comparable to the most advanced jet aircraft developed by the Supreme Alliance in the outside world.
Of course, this speed was only its sustained cruising speed over long distances. It did not represent the Demon Dragon's limit for short-range bursts.
Jiang Dali had tested it before. If it unleashed the power within its bloodline and entered its extreme-speed state, the Demon Dragon could briefly reach supersonic flight at two thousand kilometers per hour.
Yet in that terrifyingly high-speed state, only he could completely withstand the bodily damage caused by high-altitude air currents and high-speed friction without relying on any internal force for protection. Or rather, it could not really be called damage. It was merely like the biting chill of winter wind against an ordinary person. After being blown by it for too long, he might feel uncomfortable or catch a chill. Beyond that, there were no negative effects whatsoever.
Even at the Demon Dragon's ordinary cruising speed, ordinary people could not endure the flight. It was already more than four times the speed the Demonic Eagle had once reached.
However, everyone on the Demon Dragon's back was already a powerhouse above the Heavenly Human Realm.
Even Wang Yuyan, who once needed Jiang Dali to hold her close for warmth, had gradually become a minor expert of the Heavenly Human 2nd Realm after absorbing Zhu Shunshui's internal force and continuing her own cultivation. With internal force circulating through her limbs and body, she could easily resist the fierce high-altitude