He found his visit to be a meaningless endeavor.
The man knew the location and arrived from memory alone. Despite the lack of any transportation vehicle, he ended up at Ying Yue He's apartment on foot. He could have gone anywhere else, but he went here.
Li Yang realized that he didn't have any actual idea where Ying Yue He stayed exactly in the apartment… he wasn't sure if she actually stayed there until today.
He failed to ask his older brother about the whereabouts of his secretary.
It was a disappointing realization—he may have gotten caught up in other events that took his attention, but she should have been one of the first that he tried to connect with.
What were their years of working together if she didn't come to his mind at all?