It's quite clear now that what Nan Qing said earlier about not believing Su Han was still alive has become empty talk.
He must have realized that the one possessing King Qinghong is Su Han, otherwise, he wouldn't provoke him time and time again.
And this provocation, perhaps, is indeed due to Nangong Yu, or perhaps due to the arrogance in Nan Qing.
He feels that in every aspect, he is not inferior to Su Han, yet Su Han has caused such a huge sensation, being called Su Baliu, also known as Su Zun, seemingly overshadowing all his peers across the Dragon Martial Continent.
Nan Qing wants Su Han to know, and to clearly see, that there are too many people stronger than him!
As for all of this, Su Han is well aware, but with his state of mind, Nan Qing's provocation doesn't really stir much emotion in him.
The most crucial thing is the presence of the One Slash Palace and Nangong Duanchen.