The moment after Qin Wentian and the rest stepped into the windstorm tempest, they felt powerful blades of cold wind gusting about. They immediately circulated their Astral Energy, protecting their bodies.
For Stellar Martial Cultivators, their bodies were inherently weaker. Only demonic beasts were an exception.
It was impossible if one wanted to use their physical body to withstand the tempest. Maybe with his powerful physique, Qin Wentian could just barely withstand it, but it would still be impossible for him to do so without aid from circulating his Astral Energy.