After Feng Qing Yang entered the Asura Hell, not only did he manage to survive, but he even managed to attain godhood there after stumbling across a place. That place was the only safe place in the Asura Hell.
Outside of that safe place, the Asura Hell was deadly even to ordinary gods, let alone celestials who had yet to attain godhood. Normally, no celestial would have been able to survive the Asura Hell.
However, it had to be said that Feng Qing Yang surviving the Asura Hell had more to do with his Sword Dao than him just being lucky for stumbling upon the only safe place in the Asura Hell. His Sword Dao had saved him after all. Otherwise, he would have died before he even found that safe place.