To be honest, even if Ling Han did not dodge nor parry and chose to face it head on, absolutely nothing would happen to him. However, before he was absolutely certain he could kill Ao Jian, he did not intend to expose the secret that his physique was as tough as Godly metal.
If Ao Jian found out about this, then would he still fight Ling Han?
You got to be kidding. Faced with an opponent that was impossible to kill or even wound, who would still any have ideas of continuing the battle?
Ling Han was waiting for a chance, or it could be said that he was creating a chance, to let Ao Jian assume that he had grasped Ling Han's weakness and deliver a fatal strike. From that, his own weakness would also be exposed, so Ling Han would be able to counter with an attack of his own.
The two of them were equally matched. If you wouldn't give me a chance to hit you, how could I give that chance to you?