Ryu glided up the side of the obsidian mountain. After becoming a Wind Heir, he actually found that it was possible for him to fly. In fact, he was nimbler and faster than Spiritual Severing Realm experts in this regard.
Though Spiritual Severing Realm experts could fly, they usually only did so for short distances. The stress it placed on one's qi reserves was too great. But Ryu wasn't limited in this way. Though his qi had yet to match those experts in thickness, the effort he needed to fly was far less than theirs.
Unfortunately, what should have been a smooth journey thanks to his Northern Wind was constantly impeded by beasts. Though Ryu managed to dodge the Fifth and Sixth Order powerhouses that might be hiding within Flash Mountain, his attempts forced him into the territory of lesser beasts who also wanted to avoid angering these Kings.