Lu Qingfeng didn't mean to eavesdrop on Su Xiaofei's conversation with Yun Xiang. He was just looking for her, wondering where she had gone, as she hadn't come back to join him with the others. He wasn't expecting that she was being questioned by Yun Xiang like this just outside the porch where he and Su Xiaofei usually shared snacks on lazy afternoons when they were younger.
When he heard what Su Xiaofei said in his defense, Lu Qingfeng was elated to confirm that she held him with high regards. He wanted nothing more than to make sure she was happy and safe, and hearing from her lips that it was exactly what she expected of him, Lu Qingfeng swore to live up to her expectations from now on.