C1458 A Little Headache
It was not that he did not know Sun Wukong's identity, it was just that he did not know Ye Fei's identity. On the contrary, when he found out that his own son had died, he immediately knew the identity of the culprit and even more so, knew that the father of the culprit was the Ye Fei who had risen to prominence in the Earthly Immortal Realm.
Moreover, that was his only son