In Jiang Hengyue's heart, he absolutely had to kill the father and son of Skyreach Island's Fu Family. This pair was simply too villainous. If he hadn't been constantly alert, watching them, Fu Wei would likely have succeeded earlier. If Fu Wei had managed to capture Lin Yanran, Jiang Hengyue probably wouldn't have been able to go on such a killing spree. Although Jiang Hengyue knew Fu Wei definitely wouldn't succeed—after all, the Old Master was still observing the battle from mid-air—he didn't want to bother the Old Master. He wanted to personally kill Fu Wei and Fu Nanhua.
Now, seeing that his sword strike couldn't break the golden shield, the Old Master had thrown him an Emperor Level precious sword.
