Ding Runfang looked at Li Yuanfang and ignored him. He did not respond to Li Yuanfang's words but instead, completely ignored his existence.
He dared to challenge a Nascent Soul stage cultivator as an Aurous Core stage cultivator as he was from the Great Void Sect and borne as a pure Yang being. His innate potential was astounding and he managed to cultivate the Pure Yang Righteous Heart Mantra, the top mantra for people of his build.
Li Yuanfang was the Foundation Establishment stage and Ding Runfeng was able to gauge that with a gaze. He did not care to argue.
A lion will respond to aggressive actions made by tigers, leopards, and wolves. If a bunny comes along, then it would kill it with a slash of its claws. However, if an ant comes crawling, the lion won't even respond to it.
Everyone on-site felt that Li Yuanfang was behaving impulsively.