After observing the Earth Spirit Fruit, Zhang Yanhang directly crossed the road to the side of the female university student who was picking at her feet. Normally, he would abide by traffic signals, but time was currently paused, so the conditions for following the rules didn't really exist.
When he actually arrived beside this university student, Zhang Yanhang noticed a problem. The odds were that this female student was from the same university as him because he saw a very familiar-looking campus card in her skirt pocket, complete with her photo, class, and student ID number printed on it.
Therefore, unless this university student was carrying a fake campus card, there was a ninety-nine percent chance she was a fellow alumnus from the same university as Zhang Yanhang.
Perhaps you're wondering why Zhang Yanhang would start by looking under someone's skirt, but that's just a minor detail, not worth fussing over or investigating deeply.